c-- ccc ccn cco ccr cct cn- cnc cnn cno cnr cnt cny co- coc con coo cor cot coy crc crn cro crr crt cry ctc ctn cto ctr ctt cty cyc cyn cyo cyr cyt ncc ncn nco ncr nct nnc nnn nno nnt no- noc non noo nor not noy nrc nrn nro nrr nrt nry ntc ntn nto ntr ntt nyc nyn nyo nyt nyy oc- occ ocn oco ocr oct on- onc onn ono onr ont ony oo- ooc oon ooo oor oot or- orc orn oro orr ort ory ot- otc otn oto otr ott oyo rcc rcn rco rcr rct rnc rnn rno rnr rnt rny roc ron roo ror rot roy rrc rrn rrr rrt rtc rtn rto rtr rtt rty ry- ryc ryn ryo ryr ryy tcc tcn tco tcr tct tnc tnn tno tnr tnt to- toc ton too tor tot toy trc trn tro trr trt try ttc ttn tto ttr ttt tty tyc tyn tyo tyr tyt ycc yco ycy ynn yny yoc yon yoo yor yot yoy yrc yrn yro yrt ytc ytn yto ytr ytt yyc yyt yyy