a-a a-b a-i aaa aab aah aai aas ab- aba abb abh abi abs aha ahb ahh ahi ahs ai- aia aib aih aii ais as- asa asb ash asi ass baa bab bah bai bas bba bbb bbh bbi bbs bha bhb bhh bhi bhs bi- bia bib bih bii bis bsa bsb bsh bsi bss h-i haa hab hah hai has hba hbb hbh hbi hbs hha hhb hhh hhi hhs hia hib hih hii his hsa hsb hsh hsi hss ia- iaa iab iah iai ias iba ibb ibh ibi ibs iha ihb ihh ihi ihs iia iib iih iii iis is- isa isb ish isi iss saa sab sah sai sas sba sbb sbh sbi sbs sh- sha shb shh shi shs sia sib sih sii sis ss- ssa ssb ssh ssi sss