c-- ccc cco ccp ccr cct co- coc coo cop cor cot coy cpc cpo cpp cpr cpt crc cro crp crr crt cry ctc cto ctp ctr ctt cty cyc cyo cyp cyr cyt oc- occ oco ocp ocr oct oo- ooc ooo oop oor oot op- opc opo opp opr opt opy or- orc oro orp orr ort ory ot- otc oto otp otr ott oyo p-p pcc pco pcp pcr pct poc poo pop por pot poy ppc ppo ppp ppr ppt prc pro prp prr prt pry pt- ptc pto ptp ptr ptt pty py- pyc pyo pyr pyt rcc rco rcp rcr rct roc roo rop ror rot roy rpc rpo rpp rpr rpt rrc rrp rrr rrt rtc rto rtp rtr rtt rty ry- ryc ryo ryr ryy tcc tco tcp tcr tct to- toc too top tor tot toy tpc tpo tpp tpr tpt trc tro trp trr trt try ttc tto ttp ttr ttt tty tyc tyo typ tyr tyt ycc yco ycp ycy yoc yoo yop yor yot yoy ypo yrc yro yrp yrt ytc yto ytp ytr ytt yyc yyt yyy