-al a-a a-b a-i aaa aab aai aak aal aar aas ab- aba abb abi abk abl abr abs ai- aia aib aii aik ail air ais aka akb aki akk akl akr aks al- ala alb ali alk all alr als ar- ara arb ari ark arl arr ars as- asa asb asi ask asl asr ass baa bab bai bak bal bar bas bba bbb bbi bbk bbl bbr bbs bi- bia bib bii bik bil bir bis bka bkb bkk bkl bkr bks bla blb bli blk bll blr bls bra brb bri brk brl brr brs bsa bsb bsi bsk bsl bsr bss ia- iaa iab iai ial iar ias iba ibb ibi ibk ibl ibr ibs iia iib iii iil iir iis ika ikb iki ikk ikl ikr iks il- ila ilb ili ilk ill ilr ils ir- ira irb iri irk irl irr irs is- isa isb isi isk isl isr iss ka- kaa kab kai kak kal kar kas kba kbb kbi kbk kbl kbr kbs kia kib kii kik kil kir kis kkb kki kkk kkl kkr kks kl- kla klb kli klr kls kra kri krk krl krr krs ksa ksb ksi ksk ksl ksr kss la- laa lab lai lak lal lar las lba lbb lbi lbk lbl lbr lbs lia lib lii lik lil lir lis lka lkb lkl lkr lks lla llb lli llk lll llr lls lra lrb lri lrk lrr lrs lsa lsb lsi lsk lsl lsr lss ra- raa rab rai rak ral rar ras rba rbb rbi rbk rbl rbr rbs ria rib rii rik ril rir ris rkb rkk rks rla rli rll rlr rls rra rrb rri rrk rrl rrr rrs rsa rsb rsi rsk rsl rsr rss saa sab sai sak sal sar sas sba sbb sbi sbk sbl sbr sbs sia sib sii sik sil sir sis sk- ska skb ski skk skl skr sks sla slb sli slk sll slr sls sr- sra srb sri srk srl srr srs ss- ssa ssb ssi ssk ssl ssr sss