Can you spot where the 3 sub-puzzles which have only 4 pieces are?

If that annoying automatic refresh is slowing you down, you might try mousing over / off the image.

57-piece puzzle (which equals 12 times 5 minus the 3 pieces I forgot to cut which is a good thing BeCuz 57 is prime) based on a 5-piece Business-Card-size rectangular sub-puzzle. I named it a "BeCuzzle" BeCuz I wanted to make a Business Card that was a puzzle but I got sidetracked.