a-a a-b a-t aaa aab aag aan aar aat aau aay ab- aba abb abg abn abr abt abu aby ag- aga agb agg agn agr agt agu agy an- ana anb ang ann anr ant anu any ar- ara arb arg arn arr art aru ary at- ata atb atg atn atr att atu au- aua aub aug aun aur aut ay- aya ayn ayr ayt ayu b-u baa bab bag ban bar bat bau bay bba bbb bbg bbn bbr bbt bbu bby bga bgb bgg bgn bgr bgt bgu bna bnb bng bnn bnr bnt bnu bra brb brg brn brr brt bru bry bta btb btg btn btr btt btu bty bua bub bug bun bur but buu buy by- bya byg byn byr byt byu gaa gab gag gan gar gat gau gay gba gbg gbn gbr gbt gbu gby gga ggb ggg ggn ggr ggt ggu gna gnb gnn gnr gnt gnu gra grb grg grn grr grt gru gry gta gtb gtg gtn gtr gtt gtu gty gu- gua gub gug gun gur gut guu guy gy- gya gyb gyn gyr naa nab nag nan nar nat nau nay nba nbb nbg nbn nbr nbt nbu nga ngb ngg ngn ngt ngu nna nnb nng nnn nnt nnu nra nrb nrg nrn nrr nrt nru nry nta ntb ntg ntn ntr ntt ntu nua nub nug nun nur nut nuu nuy nya nyg nyn nyt nyu nyy ra- raa rab rag ran rar rat rau ray rba rbb rbg rbn rbr rbt rbu rga rgb rgg rgn rgr rgt rna rnb rng rnn rnr rnt rnu rny rra rrb rrg rrn rrr rrt rru rta rtb rtg rtn rtr rtt rtu rty rua rub rug run rur rut ruu ruy ry- rya ryg ryn ryr ryu ryy taa tab tag tan tar tat tau tay tba tbb tbg tbn tbr tbt tbu tga tgb tgg tgn tgr tgt tgu tgy tna tnb tng tnn tnr tnt tra trb trg trn trr trt tru try tta ttb ttg ttn ttr ttt ttu tty tua tub tug tun tur tut tuu tuy tya tyg tyn tyr tyt ua- uaa uab uag uan uar uat uau uay uba ubb ubg ubn ubr ubt ubu uby uga ugb ugg ugn ugr ugt ugu un- una unb ung unn unr unt unu uny ur- ura urb urg urn urr urt uru ury uta utb utn utr utt utu uty uua uug uun uur uut uuu uyu yaa yab yag yan yar yat yau yay ybg ybr yby yga yna yng ynn ynu yny yra yrg yrn yrt yru yta ytn ytr ytt ytu yua yug yun yur yut yuu yuy yyb yyg yyt yyu yyy