write a clean code. ft cfc tgcfc tcf ggcfgc f fgcfgfcffcgcf gc cfgcg ffcg cf ggcf g cfg cf g cfg gcfc ggfc fgc fg cfc gcf g fg gcf ggc cg ccfg cfc gc fg c gccf g ccffg f fgc g cffg cfgf ccf g f gcfcg cfc gc g