-th a-a a-b a-c a-t aaa aab aac aah aan aao aar aat aay ab- aba abb abc abh abn abo abr abt aby ac- aca acb acc ach acn aco acr act acy aha ahb ahc ahh ahn aho ahr aht ahy an- ana anb anc anh ann ano anr ant any aoa aob aoc aoh aon aoo aor aot ar- ara arb arc arh arn aro arr art ary at- ata atb atc ath atn ato atr att ay- aya ayc ayh ayn ayo ayr ayt baa bab bac bah ban bao bar bat bay bba bbb bbc bbh bbn bbo bbr bbt bby bca bcb bcc bch bcn bco bcr bct bcy bha bhb bhc bhh bho bhr bht bna bnb bnc bnn bno bnr bnt boa bob boc boh bon boo bor bot boy bra brb brh brn bro brr brt bry bta btb btc bth btn bto btr btt bty by- bya byc byh byn byo byr byt c-- caa cab cac cah can cao car cat cay cba cbb cbc cbh cbn cbo cbr cbt cby cca ccb ccc cch ccn cco ccr cct ch- cha chb chc chh chn cho chr cht chy cn- cna cnb cnc cnh cnn cno cnr cnt cny co- coa cob coc coh con coo cor cot coy cra crb crc crh crn cro crr crt cry cta ctb ctc cth ctn cto ctr ctt cty cya cyb cyc cyn cyo cyr cyt haa hab hac hah han hao har hat hay hba hbb hbc hbh hbn hbo hbr hbt hby hca hcb hcc hch hcn hco hcr hct hcy hha hhb hhc hhh hhn hho hhr hht hhy hna hnb hnc hnh hnn hno hnt hny hoa hob hoc hoh hon hoo hor hot hoy hr- hra hrb hrc hrh hrn hro hrr hrt hta htb htc hth htn hto htr htt hty hy- hya hyb hyc hyh hyn hyo hyr hyt hyy naa nab nac nah nan nao nar nat nay nba nbb nbc nbn nbo nbr nbt nca ncb ncc nch ncn nco ncr nct nha nhb nhc nhh nhn nhr nht nhy nna nnb nnc nnh nnn nno nnt no- noa nob noc noh non noo nor not noy nra nrb nrc nrn nro nrr nrt nry nta ntb ntc nth ntn nto ntr ntt nya nyc nyn nyo nyt nyy oaa oab oac oah oan oao oar oat ob- oba obb obc obh obn obo obr obt oby oc- oca ocb occ och ocn oco ocr oct oha ohc ohh ohn oho ohr oht on- ona onb onc onh onn ono onr ont ony oo- ooa oob ooc ooh oon ooo oor oot or- ora orb orc orh orn oro orr ort ory ot- ota otb otc oth otn oto otr ott oya oyo ra- raa rab rac rah ran rao rar rat ray rba rbb rbc rbh rbn rbo rbr rbt rca rcb rcc rch rcn rco rcr rct rh- rha rhb rhc rhh rhn rho rhr rht rna rnb rnc rnh rnn rno rnr rnt rny roa rob roc roh ron roo ror rot roy rra rrb rrc rrh rrn rrr rrt rta rtb rtc rtn rto rtr rtt rty ry- rya ryc ryn ryo ryr ryy taa tab tac tah tan tao tar tat tay tba tbb tbc tbh tbn tbo tbr tbt tca tcb tcc tch tcn tco tcr tct th- tha thb thc thh thn tho thr tht thy tna tnb tnc tnh tnn tno tnr tnt to- toa tob toc toh ton too tor tot toy tra trb trc trh trn tro trr trt try tta ttb ttc tth ttn tto ttr ttt tty tya tyc tyn tyo tyr tyt yaa yab yac yah yan yao yar yat yay ybc ybr yby yca ycc ych yco ycy yha yhc yht yna ynn yny yob yoc yon yoo yor yot yoy yra yrc yrn yro yrt yta ytc yth ytn yto ytr ytt yyb yyc yyt yyy