a-a a-b aaa aab aag aam aao aar aas aau ab- aba abb abg abm abo abr abs abu ag- aga agb agg agm ago agr ags agu ama amb amg amm amo amr ams amu aoa aob aog aom aoo aor aos aou ar- ara arb arg arm aro arr ars aru as- asa asb asg asm aso asr ass asu au- aua aub aug aum auo aur aus b-u baa bab bag bam bao bar bas bau bba bbb bbg bbm bbo bbr bbs bbu bga bgb bgg bgm bgo bgr bgs bgu bma bmb bmg bmm bmo bmr bms bmu boa bob bog bom boo bor bos bou bra brb brg brm bro brr brs bru bsa bsb bsg bsm bso bsr bss bsu bua bub bug bum buo bur bus buu gaa gab gag gam gao gar gas gau gba gbg gbm gbo gbr gbs gbu gga ggb ggg ggm ggo ggr ggs ggu gma gmb gmg gmm gmo gmr gms goa gob gog gom goo gor gos gou gra grb grg grm gro grr grs gru gsa gsb gsg gsm gso gsr gss gsu gu- gua gub gug gum guo gur gus guu m-o m-r maa mab mag mam mao mar mas mau mba mbb mbg mbm mbo mbr mbs mbu mga mgb mgm mgo mgr mgs mgu mma mmb mmg mmm mmo mmr mms mmu moa mob mog mom moo mor mos mou mra mrb mrg mrm mro mrr mrs mru msa msb msg msm mso msr mss msu mua mub mug mum mur mus muu oaa oab oag oam oao oar oas oau ob- oba obb obg obm obo obr obs obu oga ogg ogo ogs om- oma omb omg omm omo omr oms omu oo- ooa oob oog oom ooo oor oos or- ora orb org orm oro orr ors oru os- osa osb osg osm oso osr oss osu ou- oua oum ouo our ous ra- raa rab rag ram rao rar ras rau rba rbb rbg rbm rbo rbr rbs rbu rga rgb rgg rgo rgr rgs rma rmb rmg rmm rmo rmr rms roa rob rog rom roo ror ros rou rra rrb rrg rrm rrr rrs rru rsa rsb rsg rsm rso rsr rss rsu rua rub rug rum ruo rur rus ruu saa sab sag sam sao sar sas sau sba sbb sbg sbm sbo sbr sbs sbu sga sgb sgg sgm sgo sgr sgs sgu sma smb smg smm smo smr sms smu soa sob sog som soo sor sos sou sr- sra srb srg srm sro srr srs ss- ssa ssb ssg ssm sso ssr sss ssu sua sub sug sum suo sur sus suu ua- uaa uab uag uam uao uar uas uau uba ubb ubg ubo ubr ubs ubu uga ugb ugg ugm ugo ugr ugs ugu um- uma umb umg umm umo umr ums umu uoa uob uog uom uoo uor uos ur- ura urb urg urm uro urr urs uru usa usb usg usm uso usr uss usu uua uug uum uur uus uuu