CF vs SNAFU

CF

adj
  • child-free 

phrase
  • carried forward 

noun
  • center front, a line on a pattern marking the center on the front side of a piece of clothing 

SNAFU

noun
  • A ridiculously chaotic situation. 

  • A major glitch or breakdown. 

How often have the words CF and SNAFU occurred in a corpus of books? (source: Google Ngram Viewer )