-al -ol a-a a-b aaa aab aaf aak aal aam aan aao ab- aba abb abf abk abl abm abn abo af- afa afb aff afk afl afm afn afo aka akb akk akl akm akn ako al- ala alb alf alk all alm aln alo ama amb amf amk aml amm amn amo an- ana anb anf ank anl anm ann ano aoa aob aof aok aol aom aon aoo baa bab baf bak bal bam ban bao bba bbb bbf bbk bbl bbm bbn bbo bfa bfb bff bfl bfm bfn bfo bka bkb bkf bkk bkl bkm bkn bko bla blb blf blk bll blm bln blo bma bmb bmf bmk bml bmm bmn bmo bna bnb bnf bnk bnl bnn bno boa bob bof bok bol bom bon boo faa fab faf fak fal fam fan fao fba fbb fbf fbk fbl fbm fbn fbo ffa fff ffk ffl ffm ffn ffo fka fkb fkf fkk fkl fkm fla flb flf fll flm fln flo fma fmb fmf fml fmm fmn fmo fna fnb fnf fnk fnl fnm fnn foa fob fof fok fol fom fon foo ka- kaa kab kaf kak kal kam kan kao kba kbb kbf kbk kbl kbm kbn kbo kfa kff kfm kfo kkb kkk kkl kkm kkn kl- kla klb klf klm klo kma kmb kmf kmk kml kmm kmo kn- kna knf knk knl knm knn kno koa kob kof kok kol kom kon koo la- laa lab laf lak lal lam lan lao lba lbb lbf lbk lbl lbm lbo lfa lfb lff lfk lfl lfm lfn lfo lka lkb lkl lla llb llf llk lll llm lln llo lma lmb lmf lmk lml lmm lmn lmo lna lnb lnk lnl lnm lnn lno loa lob lof lok lol lom lon loo m-f m-o maa mab maf mak mal mam man mao mba mbb mbf mbk mbl mbm mbo mfa mfb mff mfl mfm mfn mfo mka mkb mkk mkl mkm mkn mko mla mlb mlf mlk mll mlm mln mlo mma mmb mmf mmk mml mmm mmn mmo mna mnb mnf mnk mnl mnm mnn mno moa mob mof mok mol mom mon moo naa nab naf nak nal nam nan nao nba nbb nbf nbk nbl nbm nbn nbo nfa nfb nff nfk nfl nfn nfo nka nkf nkk nkm nkn nko nla nlb nlf nlk nll nlm nln nlo nma nmb nmk nml nmm nmn nmo nna nnb nnf nnk nnl nnm nnn nno no- noa nob nof nok nol nom non noo oaa oab oaf oak oal oam oan oao ob- oba obb obf obk obl obm obn obo of- ofa ofb off ofl ofm ofn ofo oka okb okk okl oko ola olb olf olk oll olm oln olo om- oma omb omf oml omm omn omo on- ona onb onf onk onl onn ono oo- ooa oob oof ook ool oom oon ooo