a-a a-b a-i aaa aab aai aak aau aay ab- aba abb abi abk abu aby ai- aia aib aii aik aiu aiy aka akb aki akk aku au- aua aub aui auk ay- aya ayi ayk ayu b-u baa bab bai bak bau bay bba bbb bbi bbk bbu bby bi- bia bib bii bik biu biy bka bkb bkk bua bub bui buk buu buy by- bya byi byk byu ia- iaa iab iai iau iba ibb ibi ibk ibu iby iia iib iii iiu ika ikb iki ikk iku iu- iua iub iui iya iyy ka- kaa kab kai kak kau kay kba kbb kbi kbk kbu kia kib kii kik kiu kkb kki kkk kku kky kub kui kuk kuu kuy kya kyu ua- uaa uab uai uak uau uay uba ubb ubi ubk ubu uby uia uib uii uiu uka ukb uki ukk uku uua uuu uyi uyu yaa yab yai yak yau yay ybi yby yii yka yki ykk yua yui yuk yuu yuy yyb yyu yyy