a-a a-b aaa aab aah aam aan aao aas ab- aba abb abh abm abn abo abs aha ahb ahh ahm ahn aho ahs ama amb amh amm amn amo ams an- ana anb anh anm ann ano ans aoa aob aoh aom aon aoo aos as- asa asb ash asm asn aso ass baa bab bah bam ban bao bas bba bbb bbh bbm bbn bbo bbs bha bhb bhh bhm bho bhs bma bmb bmh bmm bmn bmo bms bna bnb bnn bno bns boa bob boh bom bon boo bos bsa bsb bsh bsm bsn bso bss haa hab hah ham han hao has hba hbb hbh hbm hbn hbo hbs hha hhb hhh hhm hhn hho hhs hma hmb hmh hmm hmo hms hna hnb hnh hnn hno hns hoa hob hoh hom hon hoo hos hsa hsb hsh hsm hsn hss m-o maa mab mah mam man mao mas mba mbb mbh mbm mbo mbs mha mhh mhm mhn mho mhs mma mmb mmh mmm mmn mmo mms mna mnb mnm mnn mno mns moa mob moh mom mon moo mos msa msb msh msm msn mso mss naa nab nah nam nan nao nas nba nbb nbm nbn nbo nbs nha nhb nhh nhm nhn nhs nma nmb nmh nmm nmn nmo nms nna nnb nnh nnm nnn nno nns no- noa nob noh nom non noo nos nsa nsb nsh nsm nsn nso nss oaa oab oah oam oan oao oas ob- oba obb obh obm obn obo obs oha ohh ohm ohn oho ohs om- oma omb omh omm omn omo oms on- ona onb onh onn ono ons oo- ooa oob ooh oom oon ooo oos os- osa osb osh osm osn oso oss saa sab sah sam san sao sas sba sbb sbh sbm sbn sbo sbs sh- sha shb shh shm shn sho shs sma smb smh smm smn smo sms sna snb snm snn sno sns soa sob soh som son soo sos ss- ssa ssb ssh ssm ssn sso sss