-al a-a a-b aaa aab aad aak aal aar ab- aba abb abd abk abl abr ad- ada adb add adk adl adr aka akb akd akk akl akr al- ala alb ald alk all alr ar- ara arb ard ark arl arr baa bab bad bak bal bar bba bbb bbd bbk bbl bbr bda bdb bdd bdk bdl bdr bka bkb bkk bkl bkr bla blb bld blk bll blr bra brb brd brk brl brr daa dab dad dak dal dar dba dbb dbd dbk dbl dbr dda ddb ddd ddk ddl ddr dka dkb dkk dkl dkr dl- dla dlb dld dlk dll dlr dra drb drd drk drl drr ka- kaa kab kad kak kal kar kba kbb kbd kbk kbl kbr kda kdb kdk kdl kdr kkb kkk kkl kkr kl- kla klb kld klr kra krd krk krl krr la- laa lab lad lak lal lar lba lbb lbd lbk lbl lbr lda ldb ldd ldk ldl ldr lka lkb lkl lkr lla llb lld llk lll llr lra lrb lrd lrk lrr ra- raa rab rad rak ral rar rba rbb rbd rbk rbl rbr rda rdb rdd rdl rdr rkb rkk rla rld rll rlr rra rrb rrd rrk rrl rrr