a-a a-b aaa aab aad aah aam aao aar aas ab- aba abb abd abh abm abo abr abs ad- ada adb add adh adm ado adr ads aha ahb ahd ahh ahm aho ahr ahs ama amb amd amh amm amo amr ams aoa aob aod aoh aom aoo aor aos ar- ara arb ard arh arm aro arr ars as- asa asb asd ash asm aso asr ass baa bab bad bah bam bao bar bas bba bbb bbd bbh bbm bbo bbr bbs bda bdb bdd bdh bdm bdo bdr bds bha bhb bhd bhh bhm bho bhr bhs bma bmb bmd bmh bmm bmo bmr bms boa bob bod boh bom boo bor bos bra brb brd brh brm bro brr brs bsa bsb bsd bsh bsm bso bsr bss daa dab dad dah dam dao dar das dba dbb dbd dbh dbm dbo dbr dbs dda ddb ddd ddh ddm ddo ddr dds dh- dha dhb dhd dhh dhm dho dhr dhs dma dmb dmd dmh dmm dmo dmr dms doa dob dod doh dom doo dor dos dra drb drd drm dro drr drs dsa dsb dsd dsh dsm dso dsr dss haa hab had hah ham hao har has hba hbb hbd hbh hbm hbo hbr hbs hda hdb hdd hdh hdm hdo hdr hds hha hhb hhd hhh hhm hho hhr hhs hma hmb hmd hmh hmm hmo hmr hms hoa hob hod hoh hom hoo hor hos hr- hra hrb hrd hrh hrm hro hrr hrs hsa hsb hsd hsh hsm hsr hss m-o m-r maa mab mad mah mam mao mar mas mba mbb mbd mbh mbm mbo mbr mbs mda mdb mdd mdh mdm mdo mdr mds mha mhd mhh mhm mho mhr mhs mma mmb mmd mmh mmm mmo mmr mms moa mob mod moh mom moo mor mos mra mrb mrd mrh mrm mro mrr mrs msa msb msd msh msm mso msr mss oaa oab oad oah oam oao oar oas ob- oba obb obd obh obm obo obr obs oda odb odd odh odm odo odr ods oha ohd ohh ohm oho ohr ohs om- oma omb omd omh omm omo omr oms oo- ooa oob ood ooh oom ooo oor oos or- ora orb ord orh orm oro orr ors os- osa osb osd osh osm oso osr oss ra- raa rab rad rah ram rao rar ras rba rbb rbd rbh rbm rbo rbr rbs rda rdb rdd rdh rdm rdo rdr rds rh- rha rhb rhd rhh rhm rho rhr rhs rma rmb rmd rmh rmm rmo rmr rms roa rob rod roh rom roo ror ros rra rrb rrd rrh rrm rrr rrs rsa rsb rsd rsh rsm rso rsr rss saa sab sad sah sam sao sar sas sba sbb sbd sbh sbm sbo sbr sbs sda sdb sdd sdh sdm sdo sdr sds sh- sha shb shd shh shm sho shr shs sma smb smd smh smm smo smr sms soa sob sod soh som soo sor sos sr- sra srb srd srh srm sro srr srs ss- ssa ssb ssd ssh ssm sso ssr sss