-al a-a a-b aaa aab aad aak aal aan aas ab- aba abb abd abk abl abn abs ad- ada adb add adk adl adn ads aka akb akd akk akl akn aks al- ala alb ald alk all aln als an- ana anb and ank anl ann ans as- asa asb asd ask asl asn ass baa bab bad bak bal ban bas bba bbb bbd bbk bbl bbn bbs bda bdb bdd bdk bdl bds bka bkb bkk bkl bkn bks bla blb bld blk bll bln bls bna bnb bnd bnk bnl bnn bns bsa bsb bsd bsk bsl bsn bss daa dab dad dak dal dan das dba dbb dbd dbk dbl dbn dbs dda ddb ddd ddk ddl ddn dds dka dkb dkk dkl dks dl- dla dlb dld dlk dll dls dna dnb dnd dnk dnl dnn dns dsa dsb dsd dsk dsl dsn dss ka- kaa kab kad kak kal kan kas kba kbb kbd kbk kbl kbn kbs kda kdb kdk kdl kds kkb kkk kkl kkn kks kl- kla klb kld kls kn- kna knd knk knl knn ksa ksb ksd ksk ksl ksn kss la- laa lab lad lak lal lan las lba lbb lbd lbk lbl lbs lda ldb ldd ldk ldl ldn lds lka lkb lkl lks lla llb lld llk lll lln lls lna lnb lnd lnk lnl lnn lns lsa lsb lsd lsk lsl lsn lss naa nab nad nak nal nan nas nba nbb nbd nbk nbl nbn nbs nda ndb ndd ndk ndl ndn nds nka nkk nkn nks nla nlb nld nlk nll nln nls nna nnb nnk nnl nnn nns nsa nsb nsd nsk nsl nsn nss saa sab sad sak sal san sas sba sbb sbd sbk sbl sbn sbs sda sdb sdd sdk sdl sdn sds sk- ska skb skd skk skl sks sla slb sld slk sll sln sls sna snb snd snk snl snn sns ss- ssa ssb ssd ssk ssl ssn sss