12 N on the F of a C

A reader of this page asks:

"I've been given a puzzle where I have to find words that fit in place of the single capital letters in this sentence:

There are 12 N on the F of a C.

The single letters are to be replaced with words that start with the provided letter."


I'm sure most of you can figure it out quite quickly. As for the reader who asked, if you try timing how long it takes to figure it out, I'm sure you'll figure it out a bit more quickly.