-al a-a a-b a-t aaa aab aal aan aar aas aat ab- aba abb abl abn abr abs abt al- ala alb all aln alr als alt an- ana anb anl ann anr ans ant ar- ara arb arl arn arr ars art as- asa asb asl asn asr ass ast at- ata atb atl atn atr ats att baa bab bal ban bar bas bat bba bbb bbl bbn bbr bbs bbt bla blb bll bln blr bls blt bna bnb bnl bnn bnr bns bnt bra brb brl brn brr brs brt bsa bsb bsl bsn bsr bss bst bta btb btl btn btr bts btt la- laa lab lal lan lar las lat lba lbb lbl lbr lbs lbt lla llb lll lln llr lls llt lna lnb lnl lnn lnr lns lnt lra lrb lrn lrr lrs lrt lsa lsb lsl lsn lsr lss lst lta ltb ltl ltr lts ltt naa nab nal nan nar nas nat nba nbb nbl nbn nbr nbs nbt nla nlb nll nln nlr nls nlt nna nnb nnl nnn nns nnt nra nrb nrl nrn nrr nrs nrt nsa nsb nsl nsn nsr nss nst nta ntb ntn ntr nts ntt ra- raa rab ral ran rar ras rat rba rbb rbl rbn rbr rbs rbt rla rll rln rlr rls rlt rna rnb rnn rnr rns rnt rra rrb rrl rrn rrr rrs rrt rsa rsb rsl rsn rsr rss rst rta rtb rtl rtn rtr rts rtt saa sab sal san sar sas sat sba sbb sbl sbn sbr sbs sbt sla slb sll sln slr sls slt sna snb snl snn snr sns snt sr- sra srb srl srn srr srs srt ss- ssa ssb ssl ssn ssr sss sst sta stb stl stn str sts stt taa tab tal tan tar tas tat tba tbb tbl tbn tbr tbs tbt tla tll tln tlr tls tlt tna tnb tnl tnn tnr tns tnt tra trb trl trn trr trs trt tsa tsb tsl tsn tsr tss tst tta ttb ttl ttn ttr tts ttt