-al a-a a-b aaa aab aae aal aam aax ab- aba abb abe abl abm abx aea aeb aee ael aem aex al- ala alb ale all alm alx ama amb ame aml amm amx ax- axa axe axl axm axx baa bab bae bal bam bax bba bbb bbe bbl bbm bbx be- bea beb bee bel bem bex bla blb ble bll blm blx bma bmb bme bml bmm bmx bxb bxl bxm bxx eaa eab eae eal eam eax eba ebb ebe ebl ebm ebx eea eeb eee eel eem eex ela elb ele ell elm elx em- ema emb eme eml emm emx ex- exa exe exl exx la- laa lab lae lal lam lax lba lbb lbe lbl lbm lbx lea leb lee lel lem lex lla llb lle lll llm lma lmb lme lml lmm lxx maa mab mae mal mam max mba mbb mbe mbl mbm mbx mea meb mee mel mem mex mla mlb mle mll mlm mlx mma mmb mme mml mmm mmx mxa mxl xaa xal xam xbe xbl xbx xee xel xem xex xla xlb xlm xma xml xmm xmx xxl xxx