a-a a-b aaa aab aah aam aas ab- aba abb abh abm abs aha ahb ahh ahm ahs ama amb amh amm ams as- asa asb ash asm ass baa bab bah bam bas bba bbb bbh bbm bbs bha bhb bhh bhm bhs bma bmb bmh bmm bms bsa bsb bsh bsm bss haa hab hah ham has hba hbb hbh hbm hbs hha hhb hhh hhm hhs hma hmb hmh hmm hms hsa hsb hsh hsm hss maa mab mah mam mas mba mbb mbh mbm mbs mha mhh mhm mhs mma mmb mmh mmm mms msa msb msh msm mss saa sab sah sam sas sba sbb sbh sbm sbs sh- sha shb shh shm shs sma smb smh smm sms ss- ssa ssb ssh ssm sss