a-ak aaaa aaab aaac aaba aabb aabc aaca aacb aacc aack aacu aaka aaku abaa abab abac abak abau abb- abba abbb abca abcb abcc abua abuk abza abzu acaa acab acac acba acca accc accu acu- akaa akca akka akku akqa akua aqu- aqua auaa auca aza- azab azaz azca azua azza baaa baak baaz baba babb babu bac- baca bacc back bacz bak- baka baku baqa bau- bauk baza bbau bbbb bbbq bcaa bcbc bcca bccc bcuc buba bubb bubq bubu buca bucc buck bucu bucz buka bukk buku buqa buuz buza buzz bzzz caaa caab caac caba cabu cac- caca cacc cack caka cauc cauk caza cbac cbbc cbca cbcc cbcu cbka ccaa ccab ccac ccba ccbc ccca cccb cccc cccu ccuc ckac ckbc ckck cuau cub- cuba cubb cuca cucc cuck cucq cuk- cuka kaaa kaab kaak kaaq kaba kabb kabc kabq kabu kabz kacb kacc kacq kacu kacz kaka kakc kakk kaku kau- kaub kauc kauk kauz kaza kazc kazq kazu kazz kbaa kbab kbac kbak kbaq kbaz kbba kbbb kbbc kbbk kbbu kbbz kbca kbcb kbck kbcq kbcu kbcz kbkb kbkk kbkz kbqb kbua kbub kbuc kbuk kbuu kbuz kbzc kbzq kbzu kbzz kcaa kcab kcac kcaq kcau kcba kcbc kcbk kcbq kcbu kcca kccb kccc kcck kccu kckc kckk kckz kcqq kcua kcub kcuk kcuz kczq kczz kkaa kkac kkaq kkba kkbb kkbq kkbz kkcb kkck kkcq kkkk kkqq kkua kkuu kkzq kkzu kkzz kqac kqak kqaq kqaz kqba kqbb kqbk kqbu kqbz kqca kqck kqkk kqqa kqqk kqqq kqqz kqzz kuac kuau kuaz kuba kubb kubc kubq kubu kuca kucb kucc kuka kukk kuku kuqq kuub kuuk kuuu kuuz kuzu kuzz kzaz kzbb kzbk kzbq kzbz kzkz kzqq kzqz kzua kzuu kzuz kzza kzzb kzzk kzzq kzzz qa-c qqqq quaa quab quba qucu quu- uabc uaca uaua ubac ubba ucak ucbc ucca ucka ucua ukaz ukba ukcc uqac uqcc uuuu uzak zaba zabu zaca zack zaka zakk zaku zaqq zaza zazu zubu zuck zuuk zuzu zzzz