a-a a-b aaa aab aah aam aan aao aar aas ab- aba abb abh abm abn abo abr abs aha ahb ahh ahm ahn aho ahr ahs ama amb amh amm amn amo amr ams an- ana anb anh anm ann ano anr ans aoa aob aoh aom aon aoo aor aos ar- ara arb arh arm arn aro arr ars as- asa asb ash asm asn aso asr ass baa bab bah bam ban bao bar bas bba bbb bbh bbm bbn bbo bbr bbs bha bhb bhh bhm bho bhr bhs bma bmb bmh bmm bmn bmo bmr bms bna bnb bnn bno bnr bns boa bob boh bom bon boo bor bos bra brb brh brm brn bro brr brs bsa bsb bsh bsm bsn bso bsr bss haa hab hah ham han hao har has hba hbb hbh hbm hbn hbo hbr hbs hha hhb hhh hhm hhn hho hhr hhs hma hmb hmh hmm hmo hmr hms hna hnb hnh hnn hno hns hoa hob hoh hom hon hoo hor hos hr- hra hrb hrh hrm hrn hro hrr hrs hsa hsb hsh hsm hsn hsr hss m-o m-r maa mab mah mam man mao mar mas mba mbb mbh mbm mbo mbr mbs mha mhh mhm mhn mho mhr mhs mma mmb mmh mmm mmn mmo mmr mms mna mnb mnm mnn mno mnr mns moa mob moh mom mon moo mor mos mra mrb mrh mrm mrn mro mrr mrs msa msb msh msm msn mso msr mss naa nab nah nam nan nao nar nas nba nbb nbm nbn nbo nbr nbs nha nhb nhh nhm nhn nhr nhs nma nmb nmh nmm nmn nmo nmr nms nna nnb nnh nnm nnn nno nns no- noa nob noh nom non noo nor nos nra nrb nrm nrn nro nrr nrs nsa nsb nsh nsm nsn nso nsr nss oaa oab oah oam oan oao oar oas ob- oba obb obh obm obn obo obr obs oha ohh ohm ohn oho ohr ohs om- oma omb omh omm omn omo omr oms on- ona onb onh onn ono onr ons oo- ooa oob ooh oom oon ooo oor oos or- ora orb orh orm orn oro orr ors os- osa osb osh osm osn oso osr oss ra- raa rab rah ram ran rao rar ras rba rbb rbh rbm rbn rbo rbr rbs rh- rha rhb rhh rhm rhn rho rhr rhs rma rmb rmh rmm rmn rmo rmr rms rna rnb rnh rnm rnn rno rnr rns roa rob roh rom ron roo ror ros rra rrb rrh rrm rrn rrr rrs rsa rsb rsh rsm rsn rso rsr rss saa sab sah sam san sao sar sas sba sbb sbh sbm sbn sbo sbr sbs sh- sha shb shh shm shn sho shr shs sma smb smh smm smn smo smr sms sna snb snm snn sno snr sns soa sob soh som son soo sor sos sr- sra srb srh srm srn sro srr srs ss- ssa ssb ssh ssm ssn sso ssr sss