c-- ccc ccn cco ccp ccr cct ccz cn- cnc cnn cno cnp cnr cnt cny co- coc con coo cop cor cot coy coz cpc cpn cpo cpp cpr cpt cpz crc crn cro crp crr crt cry crz ctc ctn cto ctp ctr ctt cty ctz cyc cyn cyo cyp cyr cyt cz- czc czo czt ncc ncn nco ncp ncr nct nnc nnn nno nnp nnt nnz no- noc non noo nop nor not noy noz npc npn npo npp npr npt npz nrc nrn nro nrp nrr nrt nry nrz ntc ntn nto ntp ntr ntt ntz nyc nyn nyo nyp nyt nyy nzo nzp nzz oc- occ ocn oco ocp ocr oct ocz on- onc onn ono onp onr ont ony oo- ooc oon ooo oop oor oot op- opc opn opo opp opr opt opy or- orc orn oro orp orr ort ory orz ot- otc otn oto otp otr ott otz oyo ozo ozt ozz p-p pcc pcn pco pcp pcr pct pn- pnc pnn pno pnp pnr pnt pny poc pon poo pop por pot poy poz ppc ppn ppo ppp ppr ppt ppz prc prn pro prp prr prt pry prz pt- ptc ptn pto ptp ptr ptt pty ptz py- pyc pyn pyo pyr pyt pzc pzp pzt rcc rcn rco rcp rcr rct rnc rnn rno rnp rnr rnt rny rnz roc ron roo rop ror rot roy roz rpc rpn rpo rpp rpr rpt rpz rrc rrn rrp rrr rrt rtc rtn rto rtp rtr rtt rty rtz ry- ryc ryn ryo ryr ryy ryz rzo rzy tcc tcn tco tcp tcr tct tnc tnn tno tnp tnr tnt tnz to- toc ton too top tor tot toy toz tpc tpn tpo tpp tpr tpt tpz trc trn tro trp trr trt try trz ttc ttn tto ttp ttr ttt tty tyc tyn tyo typ tyr tyt ycc yco ycp ycy ynn ynp yny yoc yon yoo yop yor yot yoy ypo yrc yrn yro yrp yrt ytc ytn yto ytp ytr ytt yyc yyt yyy yyz yzr yzy zco znc znn zno znp zo- zoc zon zoo zor zot zpc zpo zpp zpr zpt zro zrp ztr zzr zzt zzy zzz