karmasartre,I used to teach English a lot of years ago.We double the final consonant of a word before we add -ed, -ing, and other endings to show that the vowel has a short sound.Copping a plea BUT coping with Saturday puzzliesWe only double a consonant if a word ends in one vowel followed by one consonant.Did your eyes glaze over yet?I am on this web site at this hour because the puzzle was brutal