c-- ccc ccn cco ccp ccr ccz cn- cnc cnn cno cnp cnr cny co- coc con coo cop cor coy coz cpc cpn cpo cpp cpr cpz crc crn cro crp crr cry crz cyc cyn cyo cyp cyr cz- czc czo ncc ncn nco ncp ncr nnc nnn nno nnp nnz no- noc non noo nop nor noy noz npc npn npo npp npr npz nrc nrn nro nrp nrr nry nrz nyc nyn nyo nyp nyy nzo nzp nzz oc- occ ocn oco ocp ocr ocz 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 orz oyo ozo ozz p-p pcc pcn pco pcp pcr pn- pnc pnn pno pnp pnr pny poc pon poo pop por poy poz ppc ppn ppo ppp ppr ppz prc prn pro prp prr pry prz py- pyc pyn pyo pyr pzc pzp rcc rcn rco rcp rcr rnc rnn rno rnp rnr rny rnz roc ron roo rop ror roy roz rpc rpn rpo rpp rpr rpz rrc rrn rrp rrr ry- ryc ryn ryo ryr ryy ryz rzo rzy ycc yco ycp ycy ynn ynp yny yoc yon yoo yop yor yoy ypo yrc yrn yro yrp yyc yyy yyz yzr yzy zco znc znn zno znp zo- zoc zon zoo zor zpc zpo zpp zpr zro zrp zzr zzy zzz