c-- ccc ccn cco ccp ccr ccs cct cn- cnc cnn cno cnp cnr cns cnt co- coc con coo cop cor cos cot cpc cpn cpo cpp cpr cps cpt crc crn cro crp crr crs crt csc csn cso csp csr css cst ctc ctn cto ctp ctr cts ctt ncc ncn nco ncp ncr ncs nct nnc nnn nno nnp nns nnt no- noc non noo nop nor nos not npc npn npo npp npr nps npt nrc nrn nro nrp nrr nrs nrt nsc nsn nso nsp nsr nss nst ntc ntn nto ntp ntr nts ntt oc- occ ocn oco ocp ocr ocs oct on- onc onn ono onp onr ons ont oo- ooc oon ooo oop oor oos oot op- opc opn opo opp opr ops opt or- orc orn oro orp orr ors ort os- osc osn oso osp osr oss ost ot- otc otn oto otp otr ots ott p-p pcc pcn pco pcp pcr pcs pct pn- pnc pnn pno pnp pnr pns pnt poc pon poo pop por pos pot ppc ppn ppo ppp ppr pps ppt prc prn pro prp prr prs prt ps- psc psn pso psp psr pss pst pt- ptc ptn pto ptp ptr pts ptt rcc rcn rco rcp rcr rcs rct rnc rnn rno rnp rnr rns rnt roc ron roo rop ror ros rot rpc rpn rpo rpp rpr rps rpt rrc rrn rrp rrr rrs rrt rsc rsn rso rsp rsr rss rst rtc rtn rto rtp rtr rts rtt scc scn sco scp scr scs sct snc snn sno snp snr sns snt soc son soo sop sor sos sot spc spn spo spp spr sps spt sr- src srn sro srp srr srs srt ss- ssc ssn sso ssp ssr sss sst stc stn sto stp str sts stt tcc tcn tco tcp tcr tcs tct tnc tnn tno tnp tnr tns tnt to- toc ton too top tor tos tot tpc tpn tpo tpp tpr tps tpt trc trn tro trp trr trs trt tsc tsn tso tsp tsr tss tst ttc ttn tto ttp ttr tts ttt