This set includes all uppercase and lower case letters, numbers and symbols represented on a standard american keyboard. There are four letters/numbers/symbols on each page. The letters are ordered first in the most frequent vowels (excluding u), then the most frequent consonants (including u) in order for easy reproducing of more frequently used letters. There are also 6 blank tiles, if you choose to make your own symbols. I hope you enjoy this set. I would love as much feedback as possible!