a-a a-b aaa aab aah aak aam aao aar ab- aba abb abh abk abm abo abr aha ahb ahh ahk ahm aho ahr aka akb akh akk akm ako akr ama amb amh amk amm amo amr aoa aob aoh aok aom aoo aor ar- ara arb arh ark arm aro arr baa bab bah bak bam bao bar bba bbb bbh bbk bbm bbo bbr bha bhb bhh bhk bhm bho bhr bka bkb bkk bkm bko bkr bma bmb bmh bmk bmm bmo bmr boa bob boh bok bom boo bor bra brb brh brk brm bro brr haa hab hah hak ham hao har hba hbb hbh hbk hbm hbo hbr hha hhb hhh hhk hhm hho hhr hka hkb hkh hkk hkm hko hkr hma hmb hmh hmk hmm hmo hmr hoa hob hoh hok hom hoo hor hr- hra hrb hrh hrk hrm hro hrr ka- kaa kab kah kak kam kao kar kba kbb kbh kbk kbm kbo kbr kha khh khk khm kho khr kkb kkh kkk kkm kkr kma kmb kmh kmk kmm kmo koa kob koh kok kom koo kor kra krk kro krr m-o m-r maa mab mah mak mam mao mar mba mbb mbh mbk mbm mbo mbr mha mhh mhk mhm mho mhr mka mkb mkh mkk mkm mko mkr mma mmb mmh mmk mmm mmo mmr moa mob moh mok mom moo mor mra mrb mrh mrk mrm mro mrr oaa oab oah oak oam oao oar ob- oba obb obh obk obm obo obr oha ohh ohm oho ohr oka okb okk oko okr om- oma omb omh omm omo omr oo- ooa oob ooh ook oom ooo oor or- ora orb orh ork orm oro orr ra- raa rab rah rak ram rao rar rba rbb rbh rbk rbm rbo rbr rh- rha rhb rhh rhm rho rhr rkb rkk rkm rko rma rmb rmh rmm rmo rmr roa rob roh rok rom roo ror rra rrb rrh rrk rrm rrr