a-ak a-ya aaaa aaab aaac aaba aabb aabc aaby aaca aacb aacc aack aacu aacy aaka aaku abaa abab abac abak abau abay abb- abba abbb abby abca abcb abcc abua abuk abuy abyc abyy acaa acab acac acba acca accc accu accy acu- akaa akay akca akka akku akua auaa auby auca ayay ayca ayub ayya baaa baak baba babb babu baby bac- baca bacc back bak- baka baku bau- bauk baya bayu bbau bbay bbbb bcaa bcbc bcca bccc bcuc bkcy buba bubb bubu buca bucc buck bucu buka bukk buku buky buyu byck caaa caab caac caba cabu caby cac- caca cacc cack caka caky cauc cauk cbac cbbc cbca cbcc cbcu cbka ccaa ccab ccac ccba ccbc ccca cccb cccc cccu ccuc ckac ckbc ckck ckcy cuau cub- cuba cubb cuby cuca cucc cuck cuk- cuka cuy- cya- cyaa cyba cybb cybc cyc- cyca cycb cycc cyy- cyyc kaaa kaab kaak kaay kaba kabb kabc kabu kaby kacb kacc kacu kacy kaka kakc kakk kaku kau- kaub kauc kauk kaya kbaa kbab kbac kbak kbay kbba kbbb kbbc kbbk kbbu kbca kbcb kbck kbcu kbcy kbkb kbkk kbky kbua kbub kbuc kbuk kbuu kbuy kbya kbyb kbyu kcaa kcab kcac kcau kcba kcbc kcbk kcbu kcca kccb kccc kcck kccu kccy kckc kckk kcky kcua kcub kcuk kcya kcyk kcyy kkaa kkac kkay kkba kkbb kkcb kkck kkcy kkkk kkua kkuu kkya kkyc kkyy kuac kuau kuba kubb kubc kubu kuby kuca kucb kucc kuka kukk kuku kuky kuub kuuk kuuu kuya kuyu kuyy kyaa kyak kyay kyba kybb kybc kyby kyca kycc kyck kyka kykc kykk kyky kyuk kyuu kyya kyyk kyyy uabc uaca uaua ubac ubay ubba ucak ucbc ucca ucka ucky ucua ukba ukcc ukky uuuu yaak yaba yacc yack yacy yaka yaku yaya yayu ycab yccc yuba yubu yuca yuck yuka yuku yuky yuya yuyu yyyy