This is a tool for helping with codewords. Codewords are puzzles where a crossword-like grid has numbers in each cell representing a particular character. The idea is to work out which number maps to which letter of the alphabet.
Enter either a single character or a number in the range 1 to 27 for the
representing an unknown letter in each input box. Leave the remainder blank.
For example, '1', '2', 'w', '2' to search for a four-letter word where the
third letter is w, the first character is different to the other letters and
the same letter is repeated in the 2nd and 4th character positions.