-al a-a a-b a-t aaa aab aae aal aam aat aax ab- aba abb abe abl abm abt abx aea aeb aee ael aem aet aex al- ala alb ale all alm alt alx ama amb ame aml amm amt amx at- ata atb ate atl atm att atx ax- axa axe axl axm axt axx baa bab bae bal bam bat bax bba bbb bbe bbl bbm bbt bbx be- bea beb bee bel bem bet bex bla blb ble bll blm blt blx bma bmb bme bml bmm bmt bmx bta btb bte btl btm btt btx bxb bxl bxm bxx eaa eab eae eal eam eat eax eba ebb ebe ebl ebm ebt ebx eea eeb eee eel eem eet eex ela elb ele ell elm elt elx em- ema emb eme eml emm emt emx eta etb ete etl etm ett etx ex- exa exe exl ext exx la- laa lab lae lal lam lat lax lba lbb lbe lbl lbm lbt lbx lea leb lee lel lem let lex lla llb lle lll llm llt lma lmb lme lml lmm lmt lta ltb lte ltl ltm ltt ltx lxx maa mab mae mal mam mat max mba mbb mbe mbl mbm mbt mbx mea meb mee mel mem met mex mla mlb mle mll mlm mlt mlx mma mmb mme mml mmm mmt mmx mta mtb mte mtl mtm mtt mtx mxa mxl t-x taa tab tae tal tam tat tax tba tbb tbe tbl tbm tbt te- tea teb tee tel tem tet tex tla tle tll tlm tlt tlx tma tmb tme tml tmm tmt tmx tta ttb tte ttl ttm ttt ttx txe txl txt xaa xal xam xat xbe xbl xbx xee xel xem xet xex xla xlb xlm xlt xma xml xmm xmt xmx xtm xtx xxl xxx