c-- ccc cce ccf ccg ccl ce- cec cee cef ceg cel cfc cfe cff cfg cfl cgc cge cgg cgl cl- clc cle clf clg cll ec- ecc ece ecf ecg ecl eec eee eef eeg eel ef- efc efe eff efg efl egc ege egf egg egl elc ele elf elg ell fcc fce fcf fcg fcl fec fee fef feg fel ffc ffe fff ffg ffl fgc fge fgf fgg fgl flc fle flf flg fll gcc gce gcf gcg gcl ge- gec gee gef geg gel gfc gfe gff gfl ggc ggg glc gle glf glg gll lcc lce lcf lcg lcl lec lee lef leg lel lfc lfe lff lfg lfl lgc lge lgf lgg lgl llc lle llf llg lll