c-- ccc cce ccf cch ccl ce- cec cee cef ceh cel cfc cfe cff cfh cfl ch- chc che chf chh chl cl- clc cle clf clh cll ec- ecc ece ecf ech ecl eec eee eef eel ef- efc efe eff efh efl ehc ehe ehf ehh ehl elc ele elf elh ell fcc fce fcf fcl fec fee fef feh fel ffc ffe fff ffh ffl fhc fhe fhf fhh fhl flc fle flf fll hcc hce hcf hch hcl he- hec hee hef heh hel hfc hfe hff hfh hfl hhc hhe hhf hhh hhl hlc hle hlf hlh hll lcc lce lcf lch lcl lec lee lef leh lel lfc lfe lff lfh lfl lhc lhf lhh llc lle llf lll