-al a-a a-b aaa aab aad aak aal aar aas ab- aba abb abd abk abl abr abs ad- ada adb add adk adl adr ads aka akb akd akk akl akr aks al- ala alb ald alk all alr als ar- ara arb ard ark arl arr ars as- asa asb asd ask asl asr ass baa bab bad bak bal bar bas bba bbb bbd bbk bbl bbr bbs bda bdb bdd bdk bdl bdr bds bka bkb bkk bkl bkr bks bla blb bld blk bll blr bls bra brb brd brk brl brr brs bsa bsb bsd bsk bsl bsr bss daa dab dad dak dal dar das dba dbb dbd dbk dbl dbr dbs dda ddb ddd ddk ddl ddr dds dka dkb dkk dkl dkr dks dl- dla dlb dld dlk dll dlr dls dra drb drd drk drl drr drs dsa dsb dsd dsk dsl dsr dss ka- kaa kab kad kak kal kar kas kba kbb kbd kbk kbl kbr kbs kda kdb kdk kdl kdr kds kkb kkk kkl kkr kks kl- kla klb kld klr kls kra krd krk krl krr krs ksa ksb ksd ksk ksl ksr kss la- laa lab lad lak lal lar las lba lbb lbd lbk lbl lbr lbs lda ldb ldd ldk ldl ldr lds lka lkb lkl lkr lks lla llb lld llk lll llr lls lra lrb lrd lrk lrr lrs lsa lsb lsd lsk lsl lsr lss ra- raa rab rad rak ral rar ras rba rbb rbd rbk rbl rbr rbs rda rdb rdd rdl rdr rds rkb rkk rks rla rld rll rlr rls rra rrb rrd rrk rrl rrr rrs rsa rsb rsd rsk rsl rsr rss saa sab sad sak sal sar sas sba sbb sbd sbk sbl sbr sbs sda sdb sdd sdk sdl sdr sds sk- ska skb skd skk skl skr sks sla slb sld slk sll slr sls sr- sra srb srd srk srl srr srs ss- ssa ssb ssd ssk ssl ssr sss