a-fu a-ii aaaa aaac aaad aaaf aaai aaca aacc aacd aacf aaci aacu aada aadc aadi aadu aafa aafc aafd aaff aafi aaic aaii acaa acac acad acai acca accc accd accf acci accu acda acdc acdf acdi acfc acfd acfi aci- acia acic acid acif acu- acuf adaa adac adad adai adcc adci adda addc addd addi addu adfa adfc adia adic adif adua afaa afad afca afcc afci afcu afdc affa affc affi afia afid afif afua afud aiai aica aicc aicd aicf aida aidc aidi aidu aifd aiff aiia aiic aiid aiud aiui auaa auca auci audc audi aufc aufi c-cd caaa caac caaf cac- caca cacc caci cada cadc cadd cadi cadu cafa cafc caff cafu caia caic caid caiu cauc cauf ccaa ccac ccad ccaf ccai ccca cccc cccf ccci cccu ccdc ccdf ccdi ccfa ccfc ccfd ccff ccfi ccic ccid ccii ccuc cdaa cdac cdad cdai cdda cdfa cdic cdii cfaa cfac cfca cfcf cfda cfia ciaa ciau cica cicc cici cicu cida cidc cidi cifa ciff ciia ciid ciii ciuc cuau cuca cucc cuci cuda cudi cufa cufc cuff cufi cui- cuif daad daau daca daci dada dadi dadu dafa dafc daff dafi daia daid daud dcca dccc dcci dccu dcfc dcia dcii dddd dfaf dfcc dfcu dffa dia- diac diad diaf dica dici dida didi didu dif- difa diff diii duaa duad duca duda dudd dudu dufc duff dufu duid duif faaa faac faad faca facc fada fadd fadi fafa fafc faff fafi faid faud fcca fccf fcda fcic fcii fdca fdic ffcc ffff ffii fiaa fiac fiad fiaf fica ficc fida fidc fidf fifa fifc fiff fifi fiii fiua fuad fuc- fuca fuci fuda fudd fudi fufc fuff fufu fuid iaaa iaac iaai iaca iacc iacu iadc iafc iaff iaia icaa icac icad icaf icai icca iccc iccf icci iccu icdc icdd idad idca idda idfa idfc idia idic idid ifaa ifac ifcd ifda ific ifid iiac iica iicd iida iifa iiii iiuc iucc iuiu uaca uafa uaua ucad ucai ucca ucci ucdc ucdd ucfa ucua udaa udad udau udca uddi udic udid ufcu uffa uica uuuu