c-- ccc cce cck ccp ccs cct ce- cec cee cek cep ces cet ckc cks ckt cpc cpe cpk cpp cps cpt csc cse csk csp css cst ctc cte ctk ctp cts ctt ec- ecc ece eck ecs ect eec eee eek eep ees eet ekc eke ekp eks ekt ep- epc epe epp eps ept es- esc ese esk esp ess est etc ete etk etp ets ett k-t kcc kce kck kcp kcs kct ke- kec kee kek kep kes ket kkc kke kkk kkp kks kkt kpc kpe kpk kpp kps kpt ksc kse ksk ksp kss kst ktc kte ktk ktp kts ktt p-p pcc pce pck pcp pcs pct pec pee pek pep pes pet pkc pke pkp pks pkt ppc ppe ppk ppp pps ppt ps- psc pse psk psp pss pst pt- ptc pte ptk ptp pts ptt scc sce sck scp scs sct se- sec see sek sep ses set sk- skc ske skk skp sks skt spc spe spk spp sps spt ss- ssc sse ssk ssp sss sst stc ste stk stp sts stt tcc tce tck tcp tcs tct te- tec tee tek tep tes tet tkc tke tkk tkp tks tkt tpc tpe tpk tpp tps tpt tsc tse tsk tsp tss tst ttc tte ttk ttp tts ttt