-al a-a a-b aaa aab aad aal aan aas ab- aba abb abd abl abn abs ad- ada adb add adl adn ads al- ala alb ald all aln als an- ana anb and anl ann ans as- asa asb asd asl asn ass baa bab bad bal ban bas bba bbb bbd bbl bbn bbs bda bdb bdd bdl bds bla blb bld bll bln bls bna bnb bnd bnl bnn bns bsa bsb bsd bsl bsn bss daa dab dad dal dan das dba dbb dbd dbl dbn dbs dda ddb ddd ddl ddn dds dl- dla dlb dld dll dls dna dnb dnd dnl dnn dns dsa dsb dsd dsl dsn dss la- laa lab lad lal lan las lba lbb lbd lbl lbs lda ldb ldd ldl ldn lds lla llb lld lll lln lls lna lnb lnd lnl lnn lns lsa lsb lsd lsl lsn lss naa nab nad nal nan nas nba nbb nbd nbl nbn nbs nda ndb ndd ndl ndn nds nla nlb nld nll nln nls nna nnb nnl nnn nns nsa nsb nsd nsl nsn nss saa sab sad sal san sas sba sbb sbd sbl sbn sbs sda sdb sdd sdl sdn sds sla slb sld sll sln sls sna snb snd snl snn sns ss- ssa ssb ssd ssl ssn sss