a-a a-b aaa aab aag aah aau aay ab- aba abb abg abh abu aby ag- aga agb agg agh agu agy aha ahb ahg ahh ahu ahy au- aua aub aug auh ay- aya ayh ayu b-u baa bab bag bah bau bay bba bbb bbg bbh bbu bby bga bgb bgg bgh bgu bha bhb bhg bhh bhu bua bub bug buh buu buy by- bya byg byh byu gaa gab gag gah gau gay gba gbg gbh gbu gby gga ggb ggg ggh ggu gha ghb ghg ghh gu- gua gub gug guu guy gy- gya gyb haa hab hag hah hau hay hba hbb hbg hbh hbu hby hga hgb hgg hgh hgu hgy hha hhb hhg hhh hhu hhy hua hub hug huh huu huy hy- hya hyb hyg hyh hyy ua- uaa uab uag uah uau uay uba ubb ubg ubh ubu uby uga ugb ugg ugh ugu uha uhb uhh uhu uhy uua uug uuu uyu yaa yab yag yah yau yay ybg yby yga yha yhu yua yug yuh yuu yuy yyb yyg yyu yyy