a-a a-b a-i aaa aab aad aai aak aam aao aar ab- aba abb abd abi abk abm abo abr ad- ada adb add adi adk adm ado adr ai- aia aib aid aii aik aim aio air aka akb akd aki akk akm ako akr ama amb amd ami amk amm amo amr aoa aob aod aoi aok aom aoo aor ar- ara arb ard ari ark arm aro arr baa bab bad bai bak bam bao bar bba bbb bbd bbi bbk bbm bbo bbr bda bdb bdd bdi bdk bdm bdo bdr bi- bia bib bid bii bik bim bio bir bka bkb bkk bkm bko bkr bma bmb bmd bmi bmk bmm bmo bmr boa bob bod boi bok bom boo bor bra brb brd bri brk brm bro brr daa dab dad dai dak dam dao dar dba dbb dbd dbi dbk dbm dbo dbr dda ddb ddd ddi ddk ddm ddo ddr di- dia dib did dii dik dim dio dir dka dkb dki dkk dkm dko dkr dma dmb dmd dmi dmk dmm dmo dmr doa dob dod doi dok dom doo dor dra drb drd dri drk drm dro drr i-d ia- iaa iab iad iai iam iao iar iba ibb ibd ibi ibk ibm ibo ibr ida idb idd idi idk idm ido idr iia iib iid iii iim iio iir ika ikb iki ikk iko ikr im- ima imb imd imi imm imo io- ioa iob iod ioi iom ioo ior ir- ira irb ird iri irk irm iro irr ka- kaa kab kad kai kak kam kao kar kba kbb kbd kbi kbk kbm kbo kbr kda kdb kdk kdm kdo kdr kia kib kid kii kik kim kio kir kkb kki kkk kkm kkr kma kmb kmd kmi kmk kmm kmo koa kob kod koi kok kom koo kor kra krd kri krk kro krr m-o m-r maa mab mad mai mak mam mao mar mba mbb mbd mbi mbk mbm mbo mbr mda mdb mdd mdi mdk mdm mdo mdr mi- mia mib mid mii mik mim mio mir mka mkb mkd mkk mkm mko mkr mma mmb mmd mmi mmk mmm mmo mmr moa mob mod moi mok mom moo mor mra mrb mrd mri mrk mrm mro mrr o-i oaa oab oad oai oak oam oao oar ob- oba obb obd obi obk obm obo obr oda odb odd odi odm odo odr oia oib oid oii oik oim oio oir oka okb okd oki okk oko okr om- oma omb omd omi omm omo omr oo- ooa oob ood ooi ook oom ooo oor or- ora orb ord ori ork orm oro orr ra- raa rab rad rai rak ram rao rar rba rbb rbd rbi rbk rbm rbo rbr rda rdb rdd rdi rdm rdo rdr ria rib rid rii rik rim rio rir rkb rkk rkm rko rma rmb rmd rmi rmm rmo rmr roa rob rod roi rok rom roo ror rra rrb rrd rri rrk rrm rrr