a-a a-b a-i aaa aab aag aai aak aam aao aar ab- aba abb abg abi abk abm abo abr ag- aga agb agg agi agk agm ago agr ai- aia aib aig aii aik aim aio air aka akb akg aki akk akm ako akr ama amb amg ami amk amm amo amr aoa aob aog aoi aok aom aoo aor ar- ara arb arg ari ark arm aro arr baa bab bag bai bak bam bao bar bba bbb bbg bbi bbk bbm bbo bbr bga bgb bgg bgi bgk bgm bgo bgr bi- bia bib big bii bik bim bio bir bka bkb bkg bkk bkm bko bkr bma bmb bmg bmi bmk bmm bmo bmr boa bob bog boi bok bom boo bor bra brb brg bri brk brm bro brr gaa gab gag gai gak gam gao gar gba gbg gbi gbk gbm gbo gbr gga ggb ggg ggi ggm ggo ggr gia gib gig gii gik gim gio gir gka gkb gkm gko gma gmb gmg gmi gmm gmo gmr goa gob gog goi gok gom goo gor gra grb grg gri grk grm gro grr ia- iaa iab iag iai iam iao iar iba ibb ibg ibi ibk ibm ibo ibr iga igb igg igi igk igm igo igr iia iib iii iim iio iir ika ikb iki ikk iko ikr im- ima imb img imi imm imo io- ioa iob iog ioi iom ioo ior ir- ira irb irg iri irk irm iro irr ka- kaa kab kag kai kak kam kao kar kba kbb kbi kbk kbm kbo kbr kga kgb kgi kgm kgo kia kib kig kii kik kim kio kir kkb kki kkk kkm kkr kma kmb kmg kmi kmk kmm kmo koa kob kog koi kok kom koo kor kra krg kri krk kro krr m-o m-r maa mab mag mai mak mam mao mar mba mbb mbg mbi mbk mbm mbo mbr mga mgb mgi mgk mgm mgo mgr mi- mia mib mig mii mik mim mio mir mka mkb mkg mkk mkm mko mkr mma mmb mmg mmi mmk mmm mmo mmr moa mob mog moi mok mom moo mor mra mrb mrg mri mrk mrm mro mrr o-i oaa oab oag oai oak oam oao oar ob- oba obb obg obi obk obm obo obr oga ogg ogi ogo oia oib oii oik oim oio oir oka okb okg oki okk oko okr om- oma omb omg omi omm omo omr oo- ooa oob oog ooi ook oom ooo oor or- ora orb org ori ork orm oro orr ra- raa rab rag rai rak ram rao rar rba rbb rbg rbi rbk rbm rbo rbr rga rgb rgg rgi rgk rgo rgr ria rib rig rii rik rim rio rir rkb rkg rkk rkm rko rma rmb rmg rmi rmm rmo rmr roa rob rog roi rok rom roo ror rra rrb rrg rri rrk rrm rrr