c-- ccc cce cck ccp cct ccz ce- cec cee cek cep cet cez ckc ckt cpc cpe cpk cpp cpt cpz ctc cte ctk ctp ctt ctz cz- czc cze czk czt ec- ecc ece eck ect eec eee eek eep eet ekc eke ekp ekt ep- epc epe epp ept epz etc ete etk etp ett etz eze ezz k-t k-z kcc kce kck kcp kct ke- kec kee kek kep ket kez kkc kke kkk kkp kkt kpc kpe kpk kpp kpt ktc kte ktk ktp ktt p-p pcc pce pck pcp pct pec pee pek pep pet pez pkc pke pkp pkt ppc ppe ppk ppp ppt ppz pt- ptc pte ptk ptp ptt ptz pzc pzk pzp pzt tcc tce tck tcp tct te- tec tee tek tep tet tez tkc tke tkk tkp tkt tkz tpc tpe tpk tpp tpt tpz ttc tte ttk ttp ttt tze zce zec zee zek zep zet zez zpc zpe zpp zpt zte zzt zzz