c-- ccc cck ccp ccr ccs cct ckc cks ckt cpc cpk cpp cpr cps cpt crc crk crp crr crs crt csc csk csp csr css cst ctc ctk ctp ctr cts ctt k-t kcc kck kcp kcr kcs kct kkc kkk kkp kkr kks kkt kpc kpk kpp kpr kps kpt krc krk krp krr krs krt ksc ksk ksp ksr kss kst ktc ktk ktp ktr kts ktt p-p pcc pck pcp pcr pcs pct pkc pkp pkr pks pkt ppc ppk ppp ppr pps ppt prc prk prp prr prs prt ps- psc psk psp psr pss pst pt- ptc ptk ptp ptr pts ptt rcc rcp rcr rcs rct rkc rkk rkp rks rkt rpc rpk rpp rpr rps rpt rrc rrk rrp rrr rrs rrt rsc rsk rsp rsr rss rst rtc rtk rtp rtr rts rtt scc sck scp scr scs sct sk- skc skk skp skr sks skt spc spk spp spr sps spt sr- src srk srp srr srs srt ss- ssc ssk ssp ssr sss sst stc stk stp str sts stt tcc tck tcp tcr tcs tct tkc tkk tkp tkr tks tkt tpc tpk tpp tpr tps tpt trc trk trp trr trs trt tsc tsk tsp tsr tss tst ttc ttk ttp ttr tts ttt