c-- ccc ccn cco ccp ccr cn- cnc cnn cno cnp cnr cny co- coc con coo cop cor coy cpc cpn cpo cpp cpr crc crn cro crp crr cry cyc cyn cyo cyp cyr ncc ncn nco ncp ncr nnc nnn nno nnp no- noc non noo nop nor noy npc npn npo npp npr nrc nrn nro nrp nrr nry nyc nyn nyo nyp nyy oc- occ ocn oco ocp ocr on- onc onn ono onp onr ony oo- ooc oon ooo oop oor op- opc opn opo opp opr opy or- orc orn oro orp orr ory oyo p-p pcc pcn pco pcp pcr pn- pnc pnn pno pnp pnr pny poc pon poo pop por poy ppc ppn ppo ppp ppr prc prn pro prp prr pry py- pyc pyn pyo pyr rcc rcn rco rcp rcr rnc rnn rno rnp rnr rny roc ron roo rop ror roy rpc rpn rpo rpp rpr rrc rrn rrp rrr ry- ryc ryn ryo ryr ryy ycc yco ycp ycy ynn ynp yny yoc yon yoo yop yor yoy ypo yrc yrn yro yrp yyc yyy