-al a-a a-b aaa aab aae aaf aal aam ab- aba abb abe abf abl abm aea aeb aee aef ael aem af- afa afb afe aff afl afm al- ala alb ale alf all alm ama amb ame amf aml amm baa bab bae baf bal bam bba bbb bbe bbf bbl bbm be- bea beb bee bef bel bem bfa bfb bfe bff bfl bfm bla blb ble blf bll blm bma bmb bme bmf bml bmm eaa eab eae eaf eal eam eba ebb ebe ebf ebl ebm eea eeb eee eef eel eem ef- efa efb efe eff efl efm ela elb ele elf ell elm em- ema emb eme emf eml emm faa fab fae faf fal fam fba fbb fbe fbf fbl fbm fea feb fee fef fel fem ffa ffe fff ffl ffm fla flb fle flf fll flm fma fmb fme fmf fml fmm la- laa lab lae laf lal lam lba lbb lbe lbf lbl lbm lea leb lee lef lel lem lfa lfb lfe lff lfl lfm lla llb lle llf lll llm lma lmb lme lmf lml lmm m-f maa mab mae maf mal mam mba mbb mbe mbf mbl mbm mea meb mee mef mel mem mfa mfb mfe mff mfl mfm mla mlb mle mlf mll mlm mma mmb mme mmf mml mmm