a-a a-b aaa aab aah aas aav aay ab- aba abb abh abs abv aby aha ahb ahh ahs ahv ahy as- asa asb ash ass asv asy av- ava avb avh avs avy ay- aya ayh ays baa bab bah bas bav bay bba bbb bbh bbs bby bha bhb bhh bhs bhv bsa bsb bsh bss bsv bsy bva bvb bvh bvs bvv by- bya byh bys haa hab hah has hav hay hba hbb hbh hbs hbv hby hha hhb hhh hhs hhv hhy hsa hsb hsh hss hsv hsy hv- hva hvb hvs hvv hvy hy- hya hyb hyh hys hyv hyy saa sab sah sas sav say sba sbb sbh sbs sbv sby sh- sha shb shh shs shv shy ss- ssa ssb ssh sss ssv sva svb svs svv svy sy- sya syb syh sys v-a vaa vab vah vas vav vay vba vbh vbs vbv vh- vha vhb vhs vsa vsb vsh vss vsv vva vvb vvs vvv yaa yab yah yas yav yay ybs yby yha yhs ysa ysb yss ysy yva yvy yyb yys yyy