-th a-a a-b a-t aaa aab aag aah aao aar aat aay ab- aba abb abg abh abo abr abt aby ag- aga agb agg agh ago agr agt agy aha ahb ahg ahh aho ahr aht ahy aoa aob aog aoh aoo aor aot ar- ara arb arg arh aro arr art ary at- ata atb atg ath ato atr att ay- aya ayh ayo ayr ayt baa bab bag bah bao bar bat bay bba bbb bbg bbh bbo bbr bbt bby bga bgb bgg bgh bgo bgr bgt bha bhb bhg bhh bho bhr bht boa bob bog boh boo bor bot boy bra brb brg brh bro brr brt bry bta btb btg bth bto btr btt bty by- bya byg byh byo byr byt gaa gab gag gah gao gar gat gay gba gbg gbh gbo gbr gbt gby gga ggb ggg ggh ggo ggr ggt gha ghb ghg ghh gho ghr ght goa gob gog goh goo gor got goy gra grb grg grh gro grr grt gry gta gtb gtg gth gto gtr gtt gty gy- gya gyb gyo gyr haa hab hag hah hao har hat hay hba hbb hbg hbh hbo hbr hbt hby hga hgb hgg hgh hgo hgr hgt hgy hha hhb hhg hhh hho hhr hht hhy hoa hob hog hoh hoo hor hot hoy hr- hra hrb hrg hrh hro hrr hrt hta htb htg hth hto htr htt hty hy- hya hyb hyg hyh hyo hyr hyt hyy oaa oab oag oah oao oar oat ob- oba obb obg obh obo obr obt oby oga ogg ogh ogo ogt ogy oha ohg ohh oho ohr oht oo- ooa oob oog ooh ooo oor oot or- ora orb org orh oro orr ort ory ot- ota otb otg oth oto otr ott oya oyo ra- raa rab rag rah rao rar rat ray rba rbb rbg rbh rbo rbr rbt rga rgb rgg rgh rgo rgr rgt rh- rha rhb rhg rhh rho rhr rht roa rob rog roh roo ror rot roy rra rrb rrg rrh rrr rrt rta rtb rtg rto rtr rtt rty ry- rya ryg ryo ryr ryy taa tab tag tah tao tar tat tay tba tbb tbg tbh tbo tbr tbt tga tgb tgg tgh tgo tgr tgt tgy th- tha thb thg thh tho thr tht thy to- toa tob tog toh too tor tot toy tra trb trg trh tro trr trt try tta ttb ttg tth tto ttr ttt tty tya tyg tyo tyr tyt yaa yab yag yah yao yar yat yay ybg ybr yby yga ygo yha yht yob yog yoo yor yot yoy yra yrg yro yrt yta yth yto ytr ytt yyb yyg yyt yyy