a-a a-b a-i aaa aab aad aai aak aam aao aar aas ab- aba abb abd abi abk abm abo abr abs ad- ada adb add adi adk adm ado adr ads ai- aia aib aid aii aik aim aio air ais aka akb akd aki akk akm ako akr aks ama amb amd ami amk amm amo amr ams aoa aob aod aoi aok aom aoo aor aos ar- ara arb ard ari ark arm aro arr ars as- asa asb asd asi ask asm aso asr ass baa bab bad bai bak bam bao bar bas bba bbb bbd bbi bbk bbm bbo bbr bbs bda bdb bdd bdi bdk bdm bdo bdr bds bi- bia bib bid bii bik bim bio bir bis bka bkb bkk bkm bko bkr bks bma bmb bmd bmi bmk bmm bmo bmr bms boa bob bod boi bok bom boo bor bos bra brb brd bri brk brm bro brr brs bsa bsb bsd bsi bsk bsm bso bsr bss daa dab dad dai dak dam dao dar das dba dbb dbd dbi dbk dbm dbo dbr dbs dda ddb ddd ddi ddk ddm ddo ddr dds di- dia dib did dii dik dim dio dir dis dka dkb dki dkk dkm dko dkr dks dma dmb dmd dmi dmk dmm dmo dmr dms doa dob dod doi dok dom doo dor dos dra drb drd dri drk drm dro drr drs dsa dsb dsd dsi dsk dsm dso dsr dss i-d ia- iaa iab iad iai iam iao iar ias iba ibb ibd ibi ibk ibm ibo ibr ibs ida idb idd idi idk idm ido idr ids iia iib iid iii iim iio iir iis ika ikb iki ikk iko ikr iks im- ima imb imd imi imm imo ims io- ioa iob iod ioi iom ioo ior ios ir- ira irb ird iri irk irm iro irr irs is- isa isb isd isi isk ism iso isr iss ka- kaa kab kad kai kak kam kao kar kas kba kbb kbd kbi kbk kbm kbo kbr kbs kda kdb kdk kdm kdo kdr kds kia kib kid kii kik kim kio kir kis kkb kki kkk kkm kkr kks kma kmb kmd kmi kmk kmm kmo kms koa kob kod koi kok kom koo kor kos kra krd kri krk kro krr krs ksa ksb ksd ksi ksk ksm kso ksr kss m-o m-r maa mab mad mai mak mam mao mar mas mba mbb mbd mbi mbk mbm mbo mbr mbs mda mdb mdd mdi mdk mdm mdo mdr mds mi- mia mib mid mii mik mim mio mir mis mka mkb mkd mkk mkm mko mkr mks mma mmb mmd mmi mmk mmm mmo mmr mms moa mob mod moi mok mom moo mor mos mra mrb mrd mri mrk mrm mro mrr mrs msa msb msd msi msk msm mso msr mss o-i oaa oab oad oai oak oam oao oar oas ob- oba obb obd obi obk obm obo obr obs oda odb odd odi odm odo odr ods oia oib oid oii oik oim oio oir ois oka okb okd oki okk oko okr oks om- oma omb omd omi omm omo omr oms oo- ooa oob ood ooi ook oom ooo oor oos or- ora orb ord ori ork orm oro orr ors os- osa osb osd osi osk osm oso osr oss ra- raa rab rad rai rak ram rao rar ras rba rbb rbd rbi rbk rbm rbo rbr rbs rda rdb rdd rdi rdm rdo rdr rds ria rib rid rii rik rim rio rir ris rkb rkk rkm rko rks rma rmb rmd rmi rmm rmo rmr rms roa rob rod roi rok rom roo ror ros rra rrb rrd rri rrk rrm rrr rrs rsa rsb rsd rsi rsk rsm rso rsr rss saa sab sad sai sak sam sao sar sas sba sbb sbd sbi sbk sbm sbo sbr sbs sda sdb sdd sdi sdk sdm sdo sdr sds sia sib sid sii sik sim sio sir sis sk- ska skb skd ski skk skm sko skr sks sma smb smd smi smk smm smo smr sms soa sob sod soi sok som soo sor sos sr- sra srb srd sri srk srm sro srr srs ss- ssa ssb ssd ssi ssk ssm sso ssr sss