Object: The external box is in the shape of a typical sardine can. In the box sit 20 plastic sardines. Scales are imprinted on each fish, and each has a hole for an eye and one for a mouth. Once taken from the can and mixed up, there is only one way that they can all be "packed" into the can again. Each sardine is marked with a letter related to the solution, which is provided on a sheet of paper enclosed in the bottom of the can.