a-a a-b aaa aab aad aam aan aar aas aau ab- aba abb abd abm abn abr abs abu ad- ada adb add adm adn adr ads adu ama amb amd amm amn amr ams amu an- ana anb and anm ann anr ans anu ar- ara arb ard arm arn arr ars aru as- asa asb asd asm asn asr ass asu au- aua aub aud aum aun aur aus b-u baa bab bad bam ban bar bas bau bba bbb bbd bbm bbn bbr bbs bbu bda bdb bdd bdm bdr bds bdu bma bmb bmd bmm bmn bmr bms bmu bna bnb bnd bnn bnr bns bnu bra brb brd brm brn brr brs bru bsa bsb bsd bsm bsn bsr bss bsu bua bub bud bum bun bur bus buu daa dab dad dam dan dar das dau dba dbb dbd dbm dbn dbr dbs dbu dda ddb ddd ddm ddn ddr dds ddu dma dmb dmd dmm dmn dmr dms dmu dna dnb dnd dnm dnn dnr dns dra drb drd drm drn drr drs dru dsa dsb dsd dsm dsn dsr dss dsu dua dub dud dum dun dur dus m-r maa mab mad mam man mar mas mau mba mbb mbd mbm mbr mbs mbu mda mdb mdd mdm mdn mdr mds mdu mma mmb mmd mmm mmn mmr mms mmu mna mnb mnm mnn mnr mns mnu mra mrb mrd mrm mrn mrr mrs mru msa msb msd msm msn msr mss msu mua mub mud mum mun mur mus muu naa nab nad nam nan nar nas nau nba nbb nbd nbm nbn nbr nbs nbu nda ndb ndd ndm ndn ndr nds ndu nma nmb nmd nmm nmn nmr nms nmu nna nnb nnm nnn nns nnu nra nrb nrd nrm nrn nrr nrs nru nsa nsb nsd nsm nsn nsr nss nsu nua nub nud num nun nur nus nuu ra- raa rab rad ram ran rar ras rau rba rbb rbd rbm rbn rbr rbs rbu rda rdb rdd rdm rdn rdr rds rdu rma rmb rmd rmm rmn rmr rms rna rnb rnd rnm rnn rnr rns rnu rra rrb rrd rrm rrn rrr rrs rru rsa rsb rsd rsm rsn rsr rss rsu rua rub rud rum run rur rus ruu saa sab sad sam san sar sas sau sba sbb sbd sbm sbn sbr sbs sbu sda sdb sdd sdm sdn sdr sds sdu sma smb smd smm smn smr sms smu sna snb snd snm snn snr sns snu sr- sra srb srd srm srn srr srs ss- ssa ssb ssd ssm ssn ssr sss ssu sua sub sud sum sun sur sus suu ua- uaa uab uad uam uan uar uas uau uba ubb ubn ubr ubs ubu uda udb udd udm udn udr uds udu um- uma umb umd umm umn umr ums umu un- una unb und unm unn unr uns unu ur- ura urb urd urm urn urr urs uru usa usb usd usm usn usr uss usu uua uum uun uur uus uuu