-th c-- ccc cch cco ccr cct ch- chc chh cho chr cht chy co- coc coh coo cor cot coy crc crh cro crr crt cry ctc cth cto ctr ctt cty cyc cyo cyr cyt hcc hch hco hcr hct hcy hhc hhh hho hhr hht hhy hoc hoh hoo hor hot hoy hr- hrc hrh hro hrr hrt htc hth hto htr htt hty hy- hyc hyh hyo hyr hyt hyy oc- occ och oco ocr oct ohc ohh oho ohr oht oo- ooc ooh ooo oor oot or- orc orh oro orr ort ory ot- otc oth oto otr ott oyo rcc rch rco rcr rct rh- rhc rhh rho rhr rht roc roh roo ror rot roy rrc rrh rrr rrt rtc rto rtr rtt rty ry- ryc ryo ryr ryy tcc tch tco tcr tct th- thc thh tho thr tht thy to- toc toh too tor tot toy trc trh tro trr trt try ttc tth tto ttr ttt tty tyc tyo tyr tyt ycc ych yco ycy yhc yht yoc yoo yor yot yoy yrc yro yrt ytc yth yto ytr ytt yyc yyt yyy