a-a a-b a-t aaa aab aag aam aao aar aat aau ab- aba abb abg abm abo abr abt abu ag- aga agb agg agm ago agr agt agu ama amb amg amm amo amr amt amu aoa aob aog aom aoo aor aot aou ar- ara arb arg arm aro arr art aru at- ata atb atg atm ato atr att atu au- aua aub aug aum auo aur aut b-u baa bab bag bam bao bar bat bau bba bbb bbg bbm bbo bbr bbt bbu bga bgb bgg bgm bgo bgr bgt bgu bma bmb bmg bmm bmo bmr bmt bmu boa bob bog bom boo bor bot bou bra brb brg brm bro brr brt bru bta btb btg btm bto btr btt btu bua bub bug bum buo bur but buu gaa gab gag gam gao gar gat gau gba gbg gbm gbo gbr gbt gbu gga ggb ggg ggm ggo ggr ggt ggu gma gmb gmg gmm gmo gmr gmt goa gob gog gom goo gor got gou gra grb grg grm gro grr grt gru gta gtb gtg gtm gto gtr gtt gtu gu- gua gub gug gum guo gur gut guu m-o m-r maa mab mag mam mao mar mat mau mba mbb mbg mbm mbo mbr mbt mbu mga mgb mgm mgo mgr mgt mgu mma mmb mmg mmm mmo mmr mmt mmu moa mob mog mom moo mor mot mou mra mrb mrg mrm mro mrr mrt mru mta mtb mtg mtm mto mtr mtt mtu mua mub mug mum mur mut muu oaa oab oag oam oao oar oat oau ob- oba obb obg obm obo obr obt obu oga ogg ogo ogt om- oma omb omg omm omo omr omt omu oo- ooa oob oog oom ooo oor oot or- ora orb org orm oro orr ort oru ot- ota otb otg otm oto otr ott otu ou- oua oum ouo our out ra- raa rab rag ram rao rar rat rau rba rbb rbg rbm rbo rbr rbt rbu rga rgb rgg rgo rgr rgt rma rmb rmg rmm rmo rmr rmt roa rob rog rom roo ror rot rou rra rrb rrg rrm rrr rrt rru rta rtb rtg rtm rto rtr rtt rtu rua rub rug rum ruo rur rut ruu taa tab tag tam tao tar tat tau tba tbb tbg tbm tbo tbr tbt tbu tga tgb tgg tgm tgo tgr tgt tgu tma tmb tmg tmm tmo tmr tmt tmu to- toa tob tog tom too tor tot tou tra trb trg trm tro trr trt tru tta ttb ttg ttm tto ttr ttt ttu tua tub tug tum tuo tur tut tuu ua- uaa uab uag uam uao uar uat uau uba ubb ubg ubo ubr ubt ubu uga ugb ugg ugm ugo ugr ugt ugu um- uma umb umg umm umo umr umt umu uoa uob uog uom uoo uor uot ur- ura urb urg urm uro urr urt uru uta utb utm uto utr utt utu uua uug uum uur uut uuu