-al a-a a-b aaa aab aad aak aal ab- aba abb abd abk abl ad- ada adb add adk adl aka akb akd akk akl al- ala alb ald alk all baa bab bad bak bal bba bbb bbd bbk bbl bda bdb bdd bdk bdl bka bkb bkk bkl bla blb bld blk bll daa dab dad dak dal dba dbb dbd dbk dbl dda ddb ddd ddk ddl dka dkb dkk dkl dl- dla dlb dld dlk dll ka- kaa kab kad kak kal kba kbb kbd kbk kbl kda kdb kdk kdl kkb kkk kkl kl- kla klb kld la- laa lab lad lak lal lba lbb lbd lbk lbl lda ldb ldd ldk ldl lka lkb lkl lla llb lld llk lll