a-a a-b a-z aaa aab aad aak aau aaz ab- aba abb abd abk abu abz ad- ada adb add adk adu adz aka akb akd akk aku au- aua aub aud auk auz az- aza azb azd azu azz b-u baa bab bad bak bau baz bba bbb bbd bbk bbu bda bdb bdd bdk bdu bdz bka bkb bkk bua bub bud buk buu buz bza bzd bzu bzz daa dab dad dak dau daz dba dbb dbd dbk dbu dbz dda ddb ddd ddk ddu ddz dka dkb dkk dku dua dub dud duk duz dza dzb dzd dzu k-z ka- kaa kab kad kak kau kaz kba kbb kbd kbk kbu kbz kda kdb kdk kdu kkb kkk kku kub kud kuk kuu ua- uaa uab uad uak uau uaz uba ubb ubk ubu uda udb udd udk udu uka ukb ukk uku ukz uua uuu uza uzb uzu zaa zab zad zak zaz zbb zka zub zud zuk zuz zzz