c-- ccc cce ccf ccl ccp ce- cec cee cef cel cep cfc cfe cff cfl cfp cl- clc cle clf cll clp cpc cpe cpf cpl cpp ec- ecc ece ecf ecl eec eee eef eel eep ef- efc efe eff efl efp elc ele elf ell elp ep- epc epe epf epl epp fcc fce fcf fcl fcp fec fee fef fel fep ffc ffe fff ffl ffp flc fle flf fll flp fpc fpe fpl fpp l-p lcc lce lcf lcl lcp lec lee lef lel lep lfc lfe lff lfl lfp llc lle llf lll llp lpc lpe lpf lpl lpp p-p pcc pce pcf pcl pcp pec pee pef pel pep pfc pfe pff pfl pfp plc ple plf pll plp ppc ppe ppf ppl ppp