-al a-a a-b aaa aab aad aal aan aar aas ab- aba abb abd abl abn abr abs ad- ada adb add adl adn adr ads al- ala alb ald all aln alr als an- ana anb and anl ann anr ans ar- ara arb ard arl arn arr ars as- asa asb asd asl asn asr ass baa bab bad bal ban bar bas bba bbb bbd bbl bbn bbr bbs bda bdb bdd bdl bdr bds bla blb bld bll bln blr bls bna bnb bnd bnl bnn bnr bns bra brb brd brl brn brr brs bsa bsb bsd bsl bsn bsr bss daa dab dad dal dan dar das dba dbb dbd dbl dbn dbr dbs dda ddb ddd ddl ddn ddr dds dl- dla dlb dld dll dlr dls dna dnb dnd dnl dnn dnr dns dra drb drd drl drn drr drs dsa dsb dsd dsl dsn dsr dss la- laa lab lad lal lan lar las lba lbb lbd lbl lbr lbs lda ldb ldd ldl ldn ldr lds lla llb lld lll lln llr lls lna lnb lnd lnl lnn lnr lns lra lrb lrd lrn lrr lrs lsa lsb lsd lsl lsn lsr lss naa nab nad nal nan nar nas nba nbb nbd nbl nbn nbr nbs nda ndb ndd ndl ndn ndr nds nla nlb nld nll nln nlr nls nna nnb nnl nnn nns nra nrb nrd nrl nrn nrr nrs nsa nsb nsd nsl nsn nsr nss ra- raa rab rad ral ran rar ras rba rbb rbd rbl rbn rbr rbs rda rdb rdd rdl rdn rdr rds rla rld rll rln rlr rls rna rnb rnd rnn rnr rns rra rrb rrd rrl rrn rrr rrs rsa rsb rsd rsl rsn rsr rss saa sab sad sal san sar sas sba sbb sbd sbl sbn sbr sbs sda sdb sdd sdl sdn sdr sds sla slb sld sll sln slr sls sna snb snd snl snn snr sns sr- sra srb srd srl srn srr srs ss- ssa ssb ssd ssl ssn ssr sss