JFIF>CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), default quality C    $.' ",#(7),01444'9=82<.342C  2!!22222222222222222222222222222222222222222222222222M" }!1AQa"q2#BR$3br %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz w!1AQaq"2B #3Rbr $4%&'()*56789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz ?n%%(UeZk"\"DZrՕ%J2dsYך|#,C<6kN*9tG3Ud[[f`y J;8Xּ[ ײq1 5Kpѣ 3` QW%[jZy#s*\{*eb媒ޅط1xP189V4Ť'ĽW8Vv+nrOJύ*plQ, å*cҦQەr*%[ڶQ*+HˣІ elkuKrx?!+`֕X]]Bl%wc ]LZjPn`sW~ҬI̛L2d:9  G *o4#MvQKnqObƖM&I,$Pn2EϵG&iQTx?ZC)Zelw,ZFoB%t̛۩nV1Ľ5|0FqXR*(ݏ=ubikTedwwf,ҷyI"B::ċzY$ %2iSHhm[v"#攰iJg/1t@IҼQCaV8 O\0wG}yA>ҳSZaVEcr9o'ҬHFqPZq$ԔmB,Y @3CMTdqqc\푚itgܽwZVck54C>ÝThGD5rްՔ"!pMkbc)G W= $jtul1y[R;I)-N]mFE<_?!U'B[P 6+o`i-afTWs+ǺC994b8 UInAak|pj^Lq{xd8Q%|z <5n=kns3ɫ\+2\9HsUвZ^'Zܴ+jXSVgw`H{;&PNqT:LꀨA7?*K2\hPQeێ3]ё 3؄Y,d:1Lү=oYiJbϧ!h]HA1kbk@ E-uWW9妇3wgLT(095o z'#bHh+VOL ū4 i$n#1V[U9cW3q5˒H`>Sղ4AQ;Ŏ{ tati9<濭=g=EMBԋ ^UdCRkI%ԸXƯ隴?ЊGJB.6-ZI..0mh8SQ!V.ƉK%EwO[6@q)с\"|l[l. 2,nC g7˴BI5.7v+nU0d_αBHa\Զג|d֑ܞft2STn4#nUbu~KfRFգ=*Fo\/.mkjs=h8SI$yqۊ=%Ue-cȑmsz߮8XǓlT)xbC IZ Vtyr'5!'[6PT\rrǖi׀?2=cqj+Օ?v&R> m,dPZ1X.EZ 7#W53|%6Jr}G~7Q8S3Ԯmd\jȒl%}'5ӋEhpR՝*VQg%k|7H֪x( ڹ56UNN2M\גPH=|RfӚV0nʗOO-*qq&izf,B 5<F(Ńjn!$f(oC&sڍן}:S+?s[EˢA5zKI5`0;^8CNYy/#c9R5i&?{W<˶ȑH< `qsڕ$!nj8&{.ppF H@QۃWT })\,,QR`ԹCH ;ogy5(SrfH7.9xN&f{G9+>H{\ҜcR.2qwG|<.F CqmӁ^eYXL۾ 5ر?/jUF]:ЩΑ/{-nNOJA8G e#'J΍/lܤzdʎ'Y{H+KrO}5pQ|+P7^'1bkӽT 2 !­ű5J.&h4*TYK9$?LlkTVlr85`Czld\ej9\sʢX(dw5B$jI8^2z>Ԁ߀5tӓ3DqzĜLԵ2Ifl°dg$^*}[2 g~E>ܱ=k;6x$[5gs/Ks-ig朿z9,MlI>D;ꗑ>kO b>]Cϫ8zP7۠F@OJ8U x߄^V2(W+薂9EexcO>µXXX g\ךvW-!ze'P-,5U}bO no&#fuw+Vv<zT24YFGRi8ej8Sycwrd,gpJ9ZFj[;<70ĶnvY zcgdᕁG"W y9l# CЧv:A|ֲ^W]6Wq`aROQ.G? U ܈ B3_Kkjͦ+Ë糔=)j9]J9c|(]I+Ҽ8һ+-!#Q-1 Ү*rFc Z,8}qY2A#.rD^ @F1^MINNɝyic2M< +!l0:UL-.֒w4լEu0k2X6߼]V,o|]l( kt칌/Ẑؐ+^ؠllItXIN,VUkwXc`zT~p*EmrN15]U䱰O&T7֖Pd|+uL9Oؖ.֋Vhʐ3C%h.3mdttUr{y*Ɲ%_+cp@dlV2("c;PJ{:I+hmdHih vxmE*?U9@R..# $[;`Je4/5chSh:M=S`ם-]ѧexT &%qQC)~yd)-NY9FWGw Q(:VvqҼQ[&u㡧Ft(>X֤dDfA:V=N}{ŞV)a;…V&tD틩TZiT f KW9>CӵkK)X!.+X-u0ڌUh72$lp dsD_K|[@8=(XsS VܵxGQW1:sQZB^1};W3Ն̎M[;WH k#V<)+5#Hhٓs^glp;SM姠҉cqA41W3`^k|4gmzh4ɸU Wӈ )4wUjmFGfWjlP%ȍMfkVAa\xֱp:!N͝ΎEaM Y%J3Y-!jӓve+$6n!#tү&Aj1 i~l`zb~aWuMF;e*'W'wu59bBSr618MbVyy)ud35z}cI?+0UkČG5W 4^碵0E1#!+ay%>(`W{??gQKEc|Kx|u޵L^Pk)E}-)jnїp~ ڭ 8a\/D3^oH€+QߕJzs2eUQ0*h~檼%,;|V#mNp hc zRr~!X} q5ZP̠^+^Fet]4*󩒰8q;҃^rH+˒*Bp*4.3ުl^EE L-kfC9=zO_3[U(ȍ^{l82= o'1?^9,{R+8mJŢb;X,xV- :WfwB"fG#8au6#5™685.PRVg:̀֡̉;I׌ERWk;r֩GMyM(wqS?zLjҼ#q$CH:qW6UF{WQko=H?i|+v#͸ {s[0+ [B$NKf [t>*##*jcz3R RyR]Pы=%n(׀'* Ru, b9EC}&XdiBMCTƕ1uO2W2_J4KbNyI&8KRK98 6e{,*J.RZxA:չ|ZgRnLnptJNzr%H,?[td#FkN WEw.*ӭ]nzh6/",-!J~8wQz)ݻU;OW=*BAYR28˟Z+cMyk)f8VCH%VnO(0⢊Ŝp+BN0ⰫR=͹k H~$1T\!~T+JXe&dr"`Zeն$w;5ׇoќ? (קedž8A1GUy4 )J<]6z%$}Mz(*2+}z@e8>rgm86)#5^,=SjFvnK],r[O=)ry~ӦRmd`WwZGvS]-aec%~Ak1VȴVyX2xTgҹ K4dZmr)AcEHʷ+E>Aa0Sҹ/nk٥Ȁ {OߥI$;(Ogfg%x]"ϽC(c ޶ĜANTUVlʛg='V )b:kx8B/#Htj=Ɛۨ|WEMqd+5c}*[$Ҧ[L)LM +f; ֪nqVҍ弾o3J±vҮ)˞ռgUzy[u6 YVd 5$8*J24F֦|{:W@ڄIl}Cy`$j tI8PG5趱G}j+c+ʻd$unQp+")Em'ןV3:ET8U-+֌G}+X10w"H9\ %.ywl=UIv99R+tӵƃnɟ׬avd+w!ex#~WN+#IM).D"=]m?Zڈӻa#jtnԓִ@f˷zei5NR)D=EsgmIby Jֽ%* Srg>iXӖ 4sv"e߾)xP1 7!W+Lc\j+[%-N\2<`;KfQֹk,p9J[q6To9]3M=1o^C{mqrYV(r=]v1¸>+J1좭MZ.W{<=sy{l lՁ.Rt[Dfס,+XU+T?jxL5ƜMzD&KM:FU8=k"7vluihFC]8?tu_*]QJ#*EҥW,Ž+G|b#H#=؝[ce!\n +kg? m5 )L|ӌf, NpEIsdSNWڪֺ3TΛB,m‰rj{ oX2 {@5։0PeP[k\ޕT]78;3ZdiZSHYloEydw.>Sȯa(\W{o\zVSVGV'kUɆ Qմ5;d=yA(($G SMTf2WZP2kL6ıd$r/Ge\לfmhQE R6:ུH''v)<?^Z6#&S\!%j֯" &xkVJu'ʁ驣*sVeL\66 ّcd)} c;8+[N//#iHּQ\ȯFGؘ\֕$Bz6`8 zV]d@3Rܻ]I36\·TmZ895Bi-gTv!=MnOK"ӵd+psqK=9;yS\A/呷CGá/-q Uc'J Q^ӣ$?lҤ]v8OK"+6qe! †" Zw#PC楂b*(錹B¹#] jxNx|bsj$6 Et٣TYk^*Fdr{Z\n1 ED#-eP&,FMvWOu(d_o\ '^/2+Il>Uhzg=jUafpKȫ\Td ^PF3]Ttc$5ך8gr|̓zNRP9Jn#EwVݹ㓊i7"1 ꮧ:˙-V?qJR[(L|UQ@ڳI^ N6rLYX^}LS k嵴R@ \JKg'5zPQ[R df8⸣g:ȋBٔ\.eo*ex܂FkD4atl0 ҩk<.x{VsꧏJjW4LkI{yLr)'M㡯4ަIS(_UNg^GpV3Z74$bwJ5k}FRGl;T[Y#aE\ Ma\nxhHi[gK_A u89h4=˞)ҮPd EhrU)۝xՃÃW"Ͳzld8FBWC'ZMVb#4R%y8 EY* ^3EjG[z5.95`^yo#}kџI"JLcbM3},j†r54U5kGSs[a7*WC/<HIlufuM KORSTg8a Ibq ;f5Va+iōqުK2c(IuJXsm yCQ%u&ԥy;#l+/Yu+tV-{Ŏ@B瓊xrs^撨wZQ%)9ONM#x^ pHwǧzJ0js޵&dy 9Wtd8no78YDE7xFw1kOKntĶzj UpLmR4Vz34[l|z7+/deB ^x9HYkOm*n/x\ρObzr@"Gԃ=kἌn'KS57Zi8]F^H-?!'tEe,9ٸ Θ 䎵^Dler+oOrzCt&ט I=zf݌d; ,N֛j4ݜ mZjUf0T+Kvg ֆc`~cڹ_,YrʬRDԷi%#;emkb$Rm\g^=B rʔ*Dzw#W7.hUnfJ7kGQ[N8JHh\5 o0{&DlWƎQ`hƺm5#XF@S9lCYiJ фYxj&"I4ѤOV1(Ng"`GVi+L-Akq.Y8lbk, KydrbIq!I"2^JkugT 2L2&$"U;V^=kiNx5ɰ9ҝ nH>hKyy {V/jHrQZ4gM|B EcBIU eql?eH)Z/^A*caHzEZue}Su\-cjX-*Ju1M/ {U$иU~xt8YšF$<^|v)2to(#& Ws-؎M'2.`<=Ոk[kbRTVUuuڌTmෑO5dDco#5g~N@$&[FT~z,;Y[n3m|T<{ǖm#M㯿J'=޴֨J`]D7]B$]wV- 9֫6q\P$x GFvKSq0灺kW ɐn.HZG SLF`y@%ɮ6%ĩ%ʷ.Q[aFҹ}kMj`wHO=֑vLc4Y~dS#>Rt{v(|>lvSţBς;u3\VAm'NRgggʮs:#:1,* I7LkSxGbyKʰ= 6ZnWZ䯂UHߗ4U/!#\>r*% D p4lF0$V+,NGE隲.\a G Úz\}Ջi 8>ʮERG,mrj`M$Jv昒41#gTr<Io~ [O4v(biԮbg1ěIVc4+'֟i;*-;QfRTXuj@qFA!g<H"ڜdcME =iucNDY kZMCV. %o9; $kr3[p .2dR agj7B4dݑ\4n\zfyhFp eO045~\~QER; 94Rs[M|iD'z n r+PXޜݎGrhr]:lk֮XmR^[C>4Kʚnm8ZF7Aɩm;(!F;->96yн"X3p:מ]_ĆI!O8_X@WwLgRy"畈nڝcu9!k?Me{mplZF' U5UH* A=xr؞xְd{*nkaHpJbA΅7Xri :ޑE ']-ɯ-UP;O{DSNd_{֜pCv=Z[IVU@,W}6K<#dfZ0e{fg#Nb /р(a%y=Ii| UG%y5AmFgNHqɭ-$n-*A8T=ЅNDNƼl2qǥnkWxEo+[@?U\[Bv9`:xt/LY>0]uT7f6&ܖ͒ bk#^ˋ`X9(dr `FrԿ11pG]wMQ#9A-a3\E836y ]t{bX$֬$U7i.$lP9A& 769 ]k=}O0@3NiqG9M qʅz7sgyW{o!}jw# ȫ\Dm{`IC|<5F ()̹$dOZjf t^l)*C@P9'vRM\&$@UtmKS-mGmn έi^@ϊ&TnKV<෩+Ǟ7}`;OQ_Z4zb $ĺV6ce6ȑ{ZmlN g035xB JD3BxH?h7Sc>я֮z#J[lt20,q+?p&Z @tM⛍׷hV pk1?rɥ흣ۜqNs;(ݙs4irt`מ[]MirAzR2GTWpGA^KG*NzI^,+IH3[,.u/θWbEtv:vnGTjPHr#WK=rQ¬]W :ח+9Gsju=*]6#ڡsj{MCW7D_y#1_kt'nd:7p}D;Yw#-UMmC<}j)5U&"QIW aխe8f4 @=nfckɄ¬-"l@sqj-[5r-N69̖_lU 5.;p=H3F%B랹KILu bXT(b(znnb9Wz~bwDz6Xt!8yXdIlf<E+ƌ-Je\0[vlG%)Fwt꩒KGHŞ3ZzID򽆵Z kx'$fug 8$j4A-ٷj<^Yq8ڶٵUbtHQuXc}//|ő ]'.;0}[V1aҩ]]N@K+-͘fܣ2-YutbN*E d>@~U|c)ՔSHԆ0vv=M K;]^KkN9*W[s+I[h<OJTcQiέŒ ͼq\kjL7PpEy`|쎍ˎ)avVC=GjX6/5K+{HԄq(߆{V9"x=U+jiVzwZmf1ڧ[[A ̽ҍ*ܷUJ>  M1 pMW.*ꔅA`xҽ-i"9a~%̌F@~=D%[@óu'PwC& >*ۙv:߄PJǠQg\4wV_\BFzӵ,ƸkRzdְȧ=c$|^I"[1CwpIƉ4sۊIC/N*ۃ܊rIj4אjyp ڡ{ UfG=Jl2 n4[Q VԑmO\id,kdea@n%.ޭ=b(dԑJsSwDV0GT wV,(#ռ9Y^ ٲY}r~ь +ok=zԤ6ƥ@b,daӮkײ>#6}b#+8xxܕ TKDd?`6QjzޣorCNF=fmNէ fUs}quޗ<23@ ̍&S]~$o&vlR2k(4~jCUf6:޵n᷋NCw dmuEhml"F6""p K$qx/ۭa};H$ 8'#X:๞7?Pq^+L5_ 夰SB{Iʚγi\whLVᕗk#ОUF@lg{_McJ|#20XVYWCUѤQC_Ӭ ͩ>{(&$#դI'bEs QҼT}>[vI zJjǥš-̍Nmf"]~>*,s[&3LD>u407*g"@`y7@P|>I\3gr?ZjbϜC_?)^9hEkx>e\8j|uZ$HrVHKcP;q=zEfMZ7C[ECךImuF*0w/_uֽƐivPcI,[nܟū3}zV\lHƝ)xo|?4?W:} hd'`οtnz+% ly`iۘ(UqOIrN+{GHj36 bt=&H=pyhf;'{?c随eޣǮCp-A([$w,fQ+Υ:j]rhmaԂf){:sn̹YN<+#BVheǘ:`Ŗ>t|$#g4S_'ojRTY$YjFK,0hʇFdTոUtuKҧCt①sU+(֕4dU"қRf :I!xwq=kav&=SA` 23޹溿K⢻ \pXYln\Fu5nP1\Ч\y~zT^whfzd+x݃TAFN3>XbEFc+Ŗs>$bfŶpjki8J;YqXh2āJrW]Li~b!~&bǩ>_.<>wI0=yD,^WOrz4  N<52Uzjt,mq01 ]a+($WO^Է,1uZM\⣎})nscdG$y#=)/ sz/uFݟe,T H$Pjk[3G8=+GH^ '2ȧ'S\M2U9n#l$}S-#ռM_Y]iPQH[izbV۪"eɺ#Euċ ¨1s^ T3 pˡӇ{7 s\$`zyM"OAH"S&k= ZוF'{8Դlc?*咻lAtWhN}OS RdVa{u_,vzPe*<rĶ4[EuxBmKI8u=L&(S =&hc܌ ޥ{_ڄڦI2`!I'ijPJ}*Y,I$l?wu 8캍n,0}&*hIZzm|aWUey`?:]3NX֣PK2z}Mt"Uϓs &#Z;CIpF{\T %f:?Gigo [[RVCFA#iOx]i r7QlF*0zUEbґFڤNKfG^D+dYu 4 {.ئx քQc4Մ [lZLpz\VaԆSz¥R6c#(9qrU. )!H}M\+%Ш"?#5+F%a2OcW)իK?9G{l%H_VJ}EѯnmQ`[1x{+i[ {E5w5ꑭƓfOvi2le P M" Ӝ禢1-V?uUnOKn 7M[{->ֵƚ/e9~mHG7gyhc*ܷpZPJuQZ뷎qڄg)6+RXpح}%lkZmNK2{'n!ԌJLGISp98bĩΧ6XzO&0 hWu{#'{{U&Ve$`ySt drM${ds#ެB1b’zVXB5ʅc9^ >X{Wu*jǿ ,`ZI3p㖉#i m UP.Oz̊Q6ܞG|ʴ%f->јq:RSճDowt1[Z=tk[E">Pq۞z~Q:;.>RV|e}svs{zbK)4|ęx1b&݀qD dֲg#;Y[*}9E_d@{{Ν-~ᲊX48sLk(nrZžqgII7+/ľRKeDamif N{`8dz+zTufi@Ybr,~ks Ai,F5.b-Nh |EᴅDH cFAO$09;PfK\/sG-ĩx㵂1 t~i2w*x~mF]'6wG̉?\CEZ!6t~5icwRG} Σė8+*HK{_ѵk' tLj;DJè'7ƺݽRM~\yp~kZ5+{=>cˑ:ZcYWHDIa5ZF.W8wy40W|[,Fvn1UI~48"baպǎrաζbI(Zʹo bqd}j܂EB͏Aأ(yŒEܑTT_\iէxTl^$L q@ZjĻX@Fcl"x~A_@{sakqI*NnV}gY)4:F*vFn&mLִ#OUc\8>RgZ[+M&Ϫ0$/lJ|7"yw v3%dH=K=n#tQϷ_n{]υ=.|A,wE68HkW.}cmh61K4 "zݏ^qv'}$qvP=qN*1ol[:"+>fH>QLz3Wc;)_Z-*rU֮]x7W }GNMx39{3Ն}K š~rE!\ ?ku-;P5),o3#zz'+*+)ļr:˯cn37U[F:Na62Zi'bxI'N Y3s6ټw\{t@`܎iV|;xryⱿqѳ qWi0ɫY^&o<'UTy%## yZ*+tc)yޕGX"{l&XFHV`8WU32#@IWhbR.]7qw˻#o$qf؝ƶYG>2Z 0M ر?䷗}c[UҚ_ZJbJFI$0޵ ڕՔREavJ@o-9nF |&iwgPXeӣ&\+ p=*7dc{I9xi;Fg^{U4۸sVHLstJٵfx&PGvIU.A$.rW7:Cs5]y9$B/P2p$}KOYK4Իu,5I!q0 6O x=Ppm$S^Z,zE֣lv^Ύ nnʫg5[\<F sr}Mtt#DŽLFy& <ǥ&ɛawo {Շ*̲ɻ#f5܎yrS)+y|nKT;tO'GFu$а]c^Nr2Ea +O$kѥұM,%bb]Q*IRJXLm n=I- ,S\%ս<l%H*hə朞[80y_^=i _D%먒(,Xn$;\kg<8#w*B5ct[*. TztUtFFlGBp29r0G ~x]>}3*7 T [[HPL, khCH "KV0q-sSIT[Ivem+f6w.*,fAV8* 5 ZɖQ"7$dpG+.r;;T9[Q,ͷj4%g-7.4q`p-gTQcޮh C|lwϠ]kYi]>qSO9%Pc۽E7| ,92Þp/nOL@1lw"~εZj;D!:ZYRe2sƹjޮvq^n>xhxb7{7Gq|yWskHX;kyQ8j9Y';tTqky:- X=Z1]Fzr0߉ xxب3{/N'u%SWu|[ԥE!DctjR1XULoĻ0du?ME ;LGfQ֡_x]OWK&&K(:񕿋+}Mu˫sOmǸ+E is(NWQZt¸ SN׉.tIf}ptk6i5za$~|CG1:7^55m/C-]@S"@8b<;]ZY]xa\+xj(J_q7h>RzM} ڱӦFEzOpX!I]9ª|fdTNUF>5upXyp MU)+snv8]\Iww-Å +!F$+hi^XcAY7 hŭV'AgUy !q^-Y[z\C^UMu LjUej1oM ĩJ6G>'v-&;ڭjo?h=M qUWe4зӮ!T ;Ϡe(F##u) x=y8j8峺HY@9zלc(a$\Z] dUahA_$u?CPHpEL"VJT˻*]-׋$p@|W}q p%vyex׋5`;}p+żKo4zS^oUe?c*W8=]`q94nP|SqYnXIaQ=zTB7tmm,-KIxxAzN_Ot䲌TG&ϓa|ѻ83ƽz˧AW;8SR\=^4Q@esJ3TdkGkq24sݷ?Qy=:O" +Ptvf7[zuJMO zikaȹЏR)kJofv~z'ؽ̀/QRtbb/w8?>%KKTWpd||}kSKHӭ6so7v מ˟)d\l8oh^=?IP;y,y \}*OQDξp_Nk2-?x[$0c<>Ysj5NBkWʊҰijےp}OΡ#p~nD<'XH25ÒB ax¶ZY+ܻ@ܣGZY{*w[{讵&Lpb{\E=LhL\[d.et<[) ~U+{3@- ptAQTvХ^kQn?syӿԱs6rc"~eoon/or 콱P4s4L^QV8ܝ\rFbwy(Umc.5`Bp] #aV#:m;(Ն@8UyQ ~5؂Դv-6F zb,qh 1ڒe,3c8Itv'QڮGzV'&$عEcz ҶƘn{#G939%Ittep7*=EGd8sX$IA%unzסxčsm['%JG? x=sj st;Iq/!{SX5tHK!#)s{4jxpaH $pkKCub"`#0q^ !tM!O-FҙXm;XmmYN1X}~<ܳVfK{'Oj6X ^j[[w&pY}y?t[OBhW+k]cz"ͣy߼7+=B{A ApS޺9EEB)Z?] HR i=P79$ O'öm]b,`4NxkA4עD[oA\jR_ko>D \_i Ֆkkyݷ;=I5_~MHoZ-FaYfqÆ8ԓ[;ڤkL~0t춴(沼_|hzV`/n&W n[f g׃dl!?@I?SV9VNQD{^+2iD^$/>Q׎ٙ5OYT=A 785tn ѽ۲?A^S*Iip%6ʲAsr\B1}7k5KYr 2+.X8hKk_%/"y1nj?j}#Ïj3\&}qM}y*u7:K⏆ƷK& @AR+~ xSQy{˸{ GBx~"DCb$N7/f|дMFӖ\ԓwR(%uce94TouY= XXڶ.ucխ<A\qzr%ntɦT +c{}yԏČj[ -V]ʇ'گ[ִtX?V=vXc$ +"+{Gwi J;`\#s:<;ҼS1k\"vb+3v;RFe[8fA)*&K~F)dZo(>ܚ[M$R ݍWbivO p#iJSʥ4u b 8) 9*"N4M\ ;\gJ7c?iiF"x>J@ϯz>  )@W;y+˒gBZ)r SR;5u*Hag f%UZ {Yl#<縨[ [UP pjusβ@Cr4DrF:S@#@qҥ[ԵfD7|0 DKxO4D| (D՞g )+Dw#]wDxsY+ƽ٠ZGT-ʒ}#ou=2搱k *NB3[~$x{İOo'@7kQxcVӮHې`8kV,&M?:>:JЌ/|SL׮,X o9E^M<,#1&"NMcef