Now, can you think of a word that contains a double A (i.e. two A's in a row)? How about a double B? I've thought of words in this category with every letter.
Okay, can you think of a word in which there is a silent--and superfluous--A? In other words, where you would pronounce the word the same without it? My list in this category contains words for all but one of the letters.
See how many of these you can think of. You can use this page as a worksheet, then you can click on "ABC Lists" at the bottom of this page to see my results, along with a bonus list. . . .