c-- ccc cce cck ccn ccs cct ce- cec cee cek cen ces cet ckc cks ckt cn- cnc cne cnn cns cnt csc cse csk csn css cst ctc cte ctk ctn cts ctt ec- ecc ece eck ecn ecs ect eec eee eek een ees eet ekc eke eks ekt en- enc ene enk enn ens ent es- esc ese esk esn ess est etc ete etk etn ets ett k-t kcc kce kck kcn kcs kct ke- kec kee kek ken kes ket kkc kke kkk kkn kks kkt kn- knc kne knk knn knt ksc kse ksk ksn kss kst ktc kte ktk ktn kts ktt ncc nce nck ncn ncs nct ne- nec nee nek nen nes net nkc nke nkk nkn nks nkt nnc nne nnk nnn nns nnt nsc nse nsk nsn nss nst ntc nte ntk ntn nts ntt scc sce sck scn scs sct se- sec see sek sen ses set sk- skc ske skk sks skt snc sne snk snn sns snt ss- ssc sse ssk ssn sss sst stc ste stk stn sts stt tcc tce tck tcn tcs tct te- tec tee tek ten tes tet tkc tke tkk tks tkt tnc tne tnk tnn tns tnt tsc tse tsk tsn tss tst ttc tte ttk ttn tts ttt