[Illustration]
As there are eighteen cards bearing the letters "CANTERBURY PILGRIMS,"
write the numbers 1 to 18 in a circle, as shown in the diagram. Then
write the first letter C against 1, and each successive letter against
the second number that happens to be vacant. This has been done as far as
the second R. If the reader completes the process by placing Y against 2,
P against 6, I against 10, and so on, he will get the letters all placed
in the following order:--CYASNPTREIRMBLUIRG, which is the required
arrangement for the cards, C being at the top of the pack and G at the
bottom.