Don't forget some others:
"r" ( as pointed out above);
"k" have you seen knife ads with the blades out;
"q" "g" 'a" "p" "b" "e" all look like nooses;
"z" "s" look like whips;
"v" for victory puts one persons accomplishments above anothers;
"t" a cross and we must stay away from religion;
"n" the first letter of the "N" word.
Please be cautious in the use of c, f, h, i, j, m, n, o, u, w, x and y, because they are in the minority, and we don't want to hurt they're feelings.
an you fo inn o m (thank you for listening to me)