a-a a-b a-t aaa aab aag aam aan aar aat aau ab- aba abb abg abm abn abr abt abu ag- aga agb agg agm agn agr agt agu ama amb amg amm amn amr amt amu an- ana anb ang anm ann anr ant anu ar- ara arb arg arm arn arr art aru at- ata atb atg atm atn atr att atu au- aua aub aug aum aun aur aut b-u baa bab bag bam ban bar bat bau bba bbb bbg bbm bbn bbr bbt bbu bga bgb bgg bgm bgn bgr bgt bgu bma bmb bmg bmm bmn bmr bmt bmu bna bnb bng bnn bnr bnt bnu bra brb brg brm brn brr brt bru bta btb btg btm btn btr btt btu bua bub bug bum bun bur but buu gaa gab gag gam gan gar gat gau gba gbg gbm gbn gbr gbt gbu gga ggb ggg ggm ggn ggr ggt ggu gma gmb gmg gmm gmn gmr gmt gna gnb gnm gnn gnr gnt gnu gra grb grg grm grn grr grt gru gta gtb gtg gtm gtn gtr gtt gtu gu- gua gub gug gum gun gur gut guu m-r maa mab mag mam man mar mat mau mba mbb mbg mbm mbr mbt mbu mga mgb mgm mgn mgr mgt mgu mma mmb mmg mmm mmn mmr mmt mmu mna mnb mng mnm mnn mnr mnt mnu mra mrb mrg mrm mrn mrr mrt mru mta mtb mtg mtm mtn mtr mtt mtu mua mub mug mum mun mur mut muu naa nab nag nam nan nar nat nau nba nbb nbg nbm nbn nbr nbt nbu nga ngb ngg ngm ngn ngt ngu nma nmb nmg nmm nmn nmr nmt nmu nna nnb nng nnm nnn nnt nnu nra nrb nrg nrm nrn nrr nrt nru nta ntb ntg ntm ntn ntr ntt ntu nua nub nug num nun nur nut nuu ra- raa rab rag ram ran rar rat rau rba rbb rbg rbm rbn rbr rbt rbu rga rgb rgg rgn rgr rgt rma rmb rmg rmm rmn rmr rmt rna rnb rng rnm rnn rnr rnt rnu rra rrb rrg rrm rrn rrr rrt rru rta rtb rtg rtm rtn rtr rtt rtu rua rub rug rum run rur rut ruu taa tab tag tam tan tar tat tau tba tbb tbg tbm tbn tbr tbt tbu tga tgb tgg tgm tgn tgr tgt tgu tma tmb tmg tmm tmn tmr tmt tmu tna tnb tng tnm tnn tnr tnt tra trb trg trm trn trr trt tru tta ttb ttg ttm ttn ttr ttt ttu tua tub tug tum tun tur tut tuu ua- uaa uab uag uam uan uar uat uau uba ubb ubg ubn ubr ubt ubu uga ugb ugg ugm ugn ugr ugt ugu um- uma umb umg umm umn umr umt umu un- una unb ung unm unn unr unt unu ur- ura urb urg urm urn urr urt uru uta utb utm utn utr utt utu uua uug uum uun uur uut uuu