a-a a-b aaa aab aad aah aas aay ab- aba abb abd abh abs aby ad- ada adb add adh ads ady aha ahb ahd ahh ahs ahy as- asa asb asd ash ass asy ay- aya ayd ayh ays baa bab bad bah bas bay bba bbb bbd bbh bbs bby bda bdb bdd bdh bds bdy bha bhb bhd bhh bhs bsa bsb bsd bsh bss bsy by- bya byd byh bys daa dab dad dah das day dba dbb dbd dbh dbs dby dda ddb ddd ddh dds ddy dh- dha dhb dhd dhh dhs dsa dsb dsd dsh dss dsy dy- dya dyb dyd dys dyy haa hab had hah has hay hba hbb hbd hbh hbs hby hda hdb hdd hdh hds hdy hha hhb hhd hhh hhs hhy hsa hsb hsd hsh hss hsy hy- hya hyb hyd hyh hys hyy saa sab sad sah sas say sba sbb sbd sbh sbs sby sda sdb sdd sdh sds sdy sh- sha shb shd shh shs shy ss- ssa ssb ssd ssh sss sy- sya syb syd syh sys yaa yab yad yah yas yay ybs yby yda yds ydy yha yhs ysa ysb yss ysy yyb yys yyy