-al a-a a-b a-t aaa aab aak aal aar aas aat ab- aba abb abk abl abr abs abt aka akb akk akl akr aks al- ala alb alk all alr als alt ar- ara arb ark arl arr ars art as- asa asb ask asl asr ass ast at- ata atb atl atr ats att baa bab bak bal bar bas bat bba bbb bbk bbl bbr bbs bbt bka bkb bkk bkl bkr bks bkt bla blb blk bll blr bls blt bra brb brk brl brr brs brt bsa bsb bsk bsl bsr bss bst bta btb btk btl btr bts btt k-t ka- kaa kab kak kal kar kas kat kba kbb kbk kbl kbr kbs kkb kkk kkl kkr kks kkt kl- kla klb klr kls klt kra krk krl krr krs krt ksa ksb ksk ksl ksr kss kst kta ktb ktk ktl ktr kts ktt la- laa lab lak lal lar las lat lba lbb lbk lbl lbr lbs lbt lka lkb lkl lkr lks lkt lla llb llk lll llr lls llt lra lrb lrk lrr lrs lrt lsa lsb lsk lsl lsr lss lst lta ltb ltk ltl ltr lts ltt ra- raa rab rak ral rar ras rat rba rbb rbk rbl rbr rbs rbt rkb rkk rks rkt rla rll rlr rls rlt rra rrb rrk rrl rrr rrs rrt rsa rsb rsk rsl rsr rss rst rta rtb rtk rtl rtr rts rtt saa sab sak sal sar sas sat sba sbb sbk sbl sbr sbs sbt sk- ska skb skk skl skr sks skt sla slb slk sll slr sls slt sr- sra srb srk srl srr srs srt ss- ssa ssb ssk ssl ssr sss sst sta stb stk stl str sts stt taa tab tak tal tar tas tat tba tbb tbk tbl tbr tbs tbt tka tkb tkk tkl tkr tks tkt tla tlk tll tlr tls tlt tra trb trk trl trr trs trt tsa tsb tsk tsl tsr tss tst tta ttb ttk ttl ttr tts ttt