On a serious note, or adopting a more positive tone(!) There was a dictionary published in the mid 1970's that included a fair number of wrong spellings. The way it worked was that the incorrect spellings were in red and the correct were in black.   So "Count would also appear as the correct spelling for "cownt, kount, kownt, cont etc. Each of these was listed in alphabetical order. It was very useful for many students who had difficulty in spelling. However it had its
obvious limitiations. I am pretty sure it was published by Pergammon and was entitled something like "The Pergammon Dictionay of Perfect Spelling". Of course it was of little use to people who had red/green colour blindness as the red appeared as dark grey.