-al a-a a-b aaa aab aal aan aar aas aau ab- aba abb abl abn abr abs abu al- ala alb all aln alr als alu an- ana anb anl ann anr ans anu ar- ara arb arl arn arr ars aru as- asa asb asl asn asr ass asu au- aua aub aul aun aur aus b-u baa bab bal ban bar bas bau bba bbb bbl bbn bbr bbs bbu bla blb bll bln blr bls blu bna bnb bnl bnn bnr bns bnu bra brb brl brn brr brs bru bsa bsb bsl bsn bsr bss bsu bua bub bul bun bur bus buu la- laa lab lal lan lar las lau lba lbb lbl lbr lbs lbu lla llb lll lln llr lls llu lna lnb lnl lnn lnr lns lnu lra lrb lrn lrr lrs lru lsa lsb lsl lsn lsr lss lsu lua lub lul lun lur lus luu naa nab nal nan nar nas nau nba nbb nbl nbn nbr nbs nbu nla nlb nll nln nlr nls nlu nna nnb nnl nnn nns nnu nra nrb nrl nrn nrr nrs nru nsa nsb nsl nsn nsr nss nsu nua nub nul nun nur nus nuu ra- raa rab ral ran rar ras rau rba rbb rbl rbn rbr rbs rbu rla rll rln rlr rls rlu rna rnb rnn rnr rns rnu rra rrb rrl rrn rrr rrs rru rsa rsb rsl rsn rsr rss rsu rua rub run rur rus ruu saa sab sal san sar sas sau sba sbb sbl sbn sbr sbs sbu sla slb sll sln slr sls slu sna snb snl snn snr sns snu sr- sra srb srl srn srr srs ss- ssa ssb ssl ssn ssr sss ssu sua sub sul sun sur sus suu ua- uaa uab ual uan uar uas uau uba ubb ubl ubn ubr ubs ubu ula ulb ull uln ulr uls ulu un- una unb unl unn unr uns unu ur- ura urb url urn urr urs uru usa usb usl usn usr uss usu uua uun uur uus uuu