-al a-a a-b aaa aab aad aae aaf aal aam ab- aba abb abd abe abf abl abm ad- ada adb add ade adf adl adm aea aeb aed aee aef ael aem af- afa afb afd afe aff afl afm al- ala alb ald ale alf all alm ama amb amd ame amf aml amm baa bab bad bae baf bal bam bba bbb bbd bbe bbf bbl bbm bda bdb bdd bde bdf bdl bdm be- bea beb bed bee bef bel bem bfa bfb bfd bfe bff bfl bfm bla blb bld ble blf bll blm bma bmb bmd bme bmf bml bmm daa dab dad dae daf dal dam dba dbb dbd dbe dbf dbl dbm dda ddb ddd dde ddf ddl ddm de- dea deb ded dee def del dem dfa dfb dfd dfe dff dfl dfm dl- dla dlb dld dle dlf dll dlm dma dmb dmd dme dmf dml dmm eaa eab ead eae eaf eal eam eba ebb ebd ebe ebf ebl ebm ed- eda edb edd ede edf edl edm eea eeb eed eee eef eel eem ef- efa efb efd efe eff efl efm ela elb eld ele elf ell elm em- ema emb emd eme emf eml emm faa fab fad fae faf fal fam fba fbb fbd fbe fbf fbl fbm fda fdb fdd fde fdf fdl fdm fea feb fed fee fef fel fem ffa ffd ffe fff ffl ffm fla flb fld fle flf fll flm fma fmb fmd fme fmf fml fmm la- laa lab lad lae laf lal lam lba lbb lbd lbe lbf lbl lbm lda ldb ldd lde ldf ldl ldm lea leb led lee lef lel lem lfa lfb lfd lfe lff lfl lfm lla llb lld lle llf lll llm lma lmb lmd lme lmf lml lmm m-f maa mab mad mae maf mal mam mba mbb mbd mbe mbf mbl mbm mda mdb mdd mde mdf mdl mdm mea meb med mee mef mel mem mfa mfb mfd mfe mff mfl mfm mla mlb mld mle mlf mll mlm mma mmb mmd mme mmf mml mmm