-al -ol a-a a-b aaa aab aae aaf aag aal aam aao ab- aba abb abe abf abg abl abm abo aea aeb aee aef aeg ael aem aeo af- afa afb afe aff afg afl afm afo ag- aga agb age agf agg agl agm ago al- ala alb ale alf alg all alm alo ama amb ame amf amg aml amm amo aoa aob aoe aof aog aol aom aoo baa bab bae baf bag bal bam bao bba bbb bbe bbf bbg bbl bbm bbo be- bea beb bee bef beg bel bem beo bfa bfb bfe bff bfg bfl bfm bfo bga bgb bge bgf bgg bgl bgm bgo bla blb ble blf blg bll blm blo bma bmb bme bmf bmg bml bmm bmo boa bob boe bof bog bol bom boo eaa eab eae eaf eag eal eam eao eba ebb ebe ebf ebg ebl ebm ebo eea eeb eee eef eeg eel eem eeo ef- efa efb efe eff efg efl efm efo ega egb ege egf egg egl egm ego ela elb ele elf elg ell elm elo em- ema emb eme emf emg eml emm emo eo- eoa eob eoe eof eog eol eom eoo faa fab fae faf fag fal fam fao fba fbb fbe fbf fbg fbl fbm fbo fea feb fee fef feg fel fem feo ffa ffe fff ffg ffl ffm ffo fga fgb fge fgf fgg fgl fgm fla flb fle flf flg fll flm flo fma fmb fme fmf fmg fml fmm fmo foa fob foe fof fog fol fom foo gaa gab gae gaf gag gal gam gao gba gbe gbf gbg gbl gbm gbo ge- gea geb gee gef geg gel gem geo gfa gfb gfe gff gfl gfm gfo gga ggb ggg ggm ggo gla glb gle glf glg gll glm glo gma gmb gme gmf gmg gml gmm gmo goa gob goe gof gog gol gom goo la- laa lab lae laf lag lal lam lao lba lbb lbe lbf lbg lbl lbm lbo lea leb lee lef leg lel lem leo lfa lfb lfe lff lfg lfl lfm lfo lga lgb lge lgf lgg lgl lgm lgo lla llb lle llf llg lll llm llo lma lmb lme lmf lmg lml lmm lmo loa lob loe lof log lol lom loo m-f m-o maa mab mae maf mag mal mam mao mba mbb mbe mbf mbg mbl mbm mbo mea meb mee mef meg mel mem meo mfa mfb mfe mff mfg mfl mfm mfo mga mgb mge mgf mgl mgm mgo mla mlb mle mlf mlg mll mlm mlo mma mmb mme mmf mmg mml mmm mmo moa mob moe mof mog mol mom moo oaa oab oae oaf oag oal oam oao ob- oba obb obe obf obg obl obm obo oea oeb oee oef oeg oel oem oeo of- ofa ofb ofe off ofg ofl ofm ofo oga oge ogf ogg ogl ogo ola olb ole olf olg oll olm olo om- oma omb ome omf omg oml omm omo oo- ooa oob oof oog ool oom ooo