a-ak a-fu aaaa aaac aaad aaaf aaca aacc aacd aacf aack aacu aada aadc aadu aafa aafc aafd aaff aaka aaku acaa acac acad acca accc accd accf accu acda acdc acdf acfc acfd ackd acu- acuf adaa adac adad adak adcc adda addc addd addu adfa adfc adua aduk afaa afad afak afca afcc afcu afdc affa affc afka afua afud akaa akca akka akku akua auaa auca audc aufc c-cd caaa caac caaf cac- caca cacc cack cada cadc cadd cadu cafa cafc caff cafu caka cauc cauf cauk ccaa ccac ccad ccaf ccca cccc cccf cccu ccdc ccdf ccfa ccfc ccfd ccff ccuc cdaa cdac cdad cdda cdfa cfaa cfac cfca cfcf cfda ckac ckck ckdu cuau cuca cucc cuck cuda cufa cufc cuff cuk- cuka daad daau daca dada dadu dafa dafc daff daka daku daud dauk dcca dccc dccu dcfc dddd dfaf dfcc dfcu dffa dkdc duaa duad duca duck duda dudd dudu dufc duff dufu duka duku f--k faaa faac faad faca facc fack fada fadd fafa fafc faff faku faud fcca fccf fcda fcuk fdca ffcc ffff fuad fuc- fuca fuck fuda fudd fufc fuff fufu fuka fukk fuku kaaa kaaf kaak kacc kacd kacu kad- kada kadd kadf kadu kafa kafc kaff kafu kaka kakc kakk kaku kau- kauc kaud kauk kcaa kcac kcad kcau kcca kccc kccd kcck kccu kcda kcdc kcdd kcdu kcfa kcfc kcfd kckc kckf kckk kcua kcuf kcuk kdaa kdac kdad kdaf kdak kdca kdcc kdcd kddc kddd kddf kddk kdfc kdka kdkd kdkk kduc kfac kfcd kfcf kfda kffa kfff kffk kfka kkaa kkac kkcd kkck kkda kkdc kkdd kkkk kkua kkuu kuac kuaf kuau kuca kucc kucd kuda kudd kudu kufa kufc kuff kuka kukk kuku kuuk kuuu uaca uafa uaua ucad ucak ucca ucdc ucdd ucfa ucka ucua udaa udad udau udca uduk ufcu uffa ufuk ukaf ukcc uuuu