a-a a-b aaa aab aad aag aan aar aas aau ab- aba abb abd abg abn abr abs abu ad- ada adb add adg adn adr ads adu ag- aga agb agd agg agn agr ags agu an- ana anb and ang ann anr ans anu ar- ara arb ard arg arn arr ars aru as- asa asb asd asg asn asr ass asu au- aua aub aud aug aun aur aus b-u baa bab bad bag ban bar bas bau bba bbb bbd bbg bbn bbr bbs bbu bda bdb bdd bdg bdr bds bdu bga bgb bgd bgg bgn bgr bgs bgu bna bnb bnd bng bnn bnr bns bnu bra brb brd brg brn brr brs bru bsa bsb bsd bsg bsn bsr bss bsu bua bub bud bug bun bur bus buu daa dab dad dag dan dar das dau dba dbb dbd dbg dbn dbr dbs dbu dda ddb ddd ddg ddn ddr dds ddu dga dgd dgg dgn dgr dgs dgu dna dnb dnd dng dnn dnr dns dra drb drd drg drn drr drs dru dsa dsb dsd dsg dsn dsr dss dsu dua dub dud dug dun dur dus g-d gaa gab gad gag gan gar gas gau gba gbd gbg gbn gbr gbs gbu gda gdb gdd gdn gdr gds gdu gga ggb ggd ggg ggn ggr ggs ggu gna gnb gnd gnn gnr gns gnu gra grb grd grg grn grr grs gru gsa gsb gsd gsg gsn gsr gss gsu gu- gua gub gud gug gun gur gus guu naa nab nad nag nan nar nas nau nba nbb nbd nbg nbn nbr nbs nbu nda ndb ndd ndg ndn ndr nds ndu nga ngb ngd ngg ngn ngs ngu nna nnb nng nnn nns nnu nra nrb nrd nrg nrn nrr nrs nru nsa nsb nsd nsg nsn nsr nss nsu nua nub nud nug nun nur nus nuu ra- raa rab rad rag ran rar ras rau rba rbb rbd rbg rbn rbr rbs rbu rda rdb rdd rdg rdn rdr rds rdu rga rgb rgd rgg rgn rgr rgs rna rnb rnd rng rnn rnr rns rnu rra rrb rrd rrg rrn rrr rrs rru rsa rsb rsd rsg rsn rsr rss rsu rua rub rud rug run rur rus ruu saa sab sad sag san sar sas sau sba sbb sbd sbg sbn sbr sbs sbu sda sdb sdd sdg sdn sdr sds sdu sga sgb sgd sgg sgn sgr sgs sgu sna snb snd sng snn snr sns snu sr- sra srb srd srg srn srr srs ss- ssa ssb ssd ssg ssn ssr sss ssu sua sub sud sug sun sur sus suu ua- uaa uab uad uag uan uar uas uau uba ubb ubg ubn ubr ubs ubu uda udb udd udg udn udr uds udu uga ugb ugg ugn ugr ugs ugu un- una unb und ung unn unr uns unu ur- ura urb urd urg urn urr urs uru usa usb usd usg usn usr uss usu uua uug uun uur uus uuu