-al a-a a-b a-i aaa aab aai aak aal aan aar aas ab- aba abb abi abk abl abn abr abs ai- aia aib aii aik ail ain air ais aka akb aki akk akl akn akr aks al- ala alb ali alk all aln alr als an- ana anb ani ank anl ann anr ans ar- ara arb ari ark arl arn arr ars as- asa asb asi ask asl asn asr ass baa bab bai bak bal ban bar bas bba bbb bbi bbk bbl bbn bbr bbs bi- bia bib bii bik bil bin bir bis bka bkb bkk bkl bkn bkr bks bla blb bli blk bll bln blr bls bna bnb bni bnk bnl bnn bnr bns bra brb bri brk brl brn brr brs bsa bsb bsi bsk bsl bsn bsr bss ia- iaa iab iai ial ian iar ias iba ibb ibi ibk ibl ibn ibr ibs iia iib iii iil iin iir iis ika ikb iki ikk ikl ikr iks il- ila ilb ili ilk ill iln ilr ils in- ina inb ini ink inl inn inr ins ir- ira irb iri irk irl irn irr irs is- isa isb isi isk isl isn isr iss ka- kaa kab kai kak kal kan kar kas kba kbb kbi kbk kbl kbn kbr kbs kia kib kii kik kil kin kir kis kkb kki kkk kkl kkn kkr kks kl- kla klb kli klr kls kn- kna kni knk knl knn knr kra kri krk krl krn krr krs ksa ksb ksi ksk ksl ksn ksr kss la- laa lab lai lak lal lan lar las lba lbb lbi lbk lbl lbr lbs lia lib lii lik lil lin lir lis lka lkb lkl lkr lks lla llb lli llk lll lln llr lls lna lnb lni lnk lnl lnn lnr lns lra lrb lri lrk lrn lrr lrs lsa lsb lsi lsk lsl lsn lsr lss n-i naa nab nai nak nal nan nar nas nba nbb nbi nbk nbl nbn nbr nbs nia nib nii nik nil nin nir nis nka nki nkk nkn nkr nks nla nlb nli nlk nll nln nlr nls nna nnb nni nnk nnl nnn nns nra nrb nri nrk nrl nrn nrr nrs nsa nsb nsi nsk nsl nsn nsr nss ra- raa rab rai rak ral ran rar ras rba rbb rbi rbk rbl rbn rbr rbs ria rib rii rik ril rin rir ris rkb rkk rks rla rli rll rln rlr rls rna rnb rni rnn rnr rns rra rrb rri rrk rrl rrn rrr rrs rsa rsb rsi rsk rsl rsn rsr rss saa sab sai sak sal san sar sas sba sbb sbi sbk sbl sbn sbr sbs sia sib sii sik sil sin sir sis sk- ska skb ski skk skl skr sks sla slb sli slk sll sln slr sls sna snb sni snk snl snn snr sns sr- sra srb sri srk srl srn srr srs ss- ssa ssb ssi ssk ssl ssn ssr sss