a-a a-b a-z aaa aab aad aak aau aay aaz ab- aba abb abd abk abu aby abz ad- ada adb add adk adu ady adz aka akb akd akk aku au- aua aub aud auk auz ay- aya ayd ayk ayu ayz az- aza azb azd azu azy azz b-u baa bab bad bak bau bay baz bba bbb bbd bbk bbu bby bda bdb bdd bdk bdu bdy bdz bka bkb bkk bua bub bud buk buu buy buz by- bya byd byk byu byz bza bzd bzu bzz daa dab dad dak dau day daz dba dbb dbd dbk dbu dby dbz dda ddb ddd ddk ddu ddy ddz dka dkb dkk dku dua dub dud duk duy duz dy- dya dyb dyd dyk dyu dyy dza dzb dzd dzu k-z ka- kaa kab kad kak kau kay kaz kba kbb kbd kbk kbu kbz kda kdb kdk kdu kdy kkb kkk kku kky kub kud kuk kuu kuy kya kyd kyu kyz kzy ua- uaa uab uad uak uau uay uaz uba ubb ubk ubu uby uda udb udd udk udu uka ukb ukk uku ukz uua uuu uyu uza uzb uzu yaa yab yad yak yau yay yaz yby ybz yda ydy yka ykk yua yud yuk yuu yuy yyb yyu yyy yyz yzb yzu yzy zaa zab zad zak zay zaz zbb zby zka zub zud zuk zuz zzy zzz