c-- ccc cce ccf cck ccl ccp ccz ce- cec cee cef cek cel cep cez cfc cfe cff cfk cfl cfp cfz ckc cl- clc cle clf clk cll clp clz cpc cpe cpf cpk cpl cpp cpz cz- czc cze czk ec- ecc ece ecf eck ecl eec eee eef eek eel eep ef- efc efe eff efl efp ekc eke ekf ekl ekp elc ele elf elk ell elp elz ep- epc epe epf epl epp epz eze ezf ezz fcc fce fcf fck fcl fcp fcz fec fee fef fek fel fep fez ffc ffe fff ffk ffl ffp ffz fkc fkf fkk fkl fkp flc fle flf fll flp fpc fpe fpk fpl fpp k-z kcc kce kck kcl kcp ke- kec kee kef kek kel kep kez kfc kff kkc kke kkk kkl kkp kl- klc klf klz kpc kpe kpf kpk kpl kpp l-p lcc lce lcf lck lcl lcp lec lee lef lek lel lep lez lfc lfe lff lfk lfl lfp lkl lkp llc lle llf llk lll llp llz lpc lpe lpf lpk lpl lpp lpz p-p pcc pce pcf pck pcl pcp pec pee pef pek pel pep pez pfc pfe pff pfk pfl pfp pkc pke pkf pkl pkp plc ple plf plk pll plp plz ppc ppe ppf ppk ppl ppp ppz pzc pzk pzl pzp zce zcl zec zee zef zek zel zep zez zfc zpc zpe zpf zpl zpp zzz