The lonely letter c

I did it again. I was looking at a dictionary and my eyes found the page no one ever reads--the list of how to pronounce English. There were 10 selections for "a" (although it didn't list Aaron) and none for "c" which has no sound of its own. It showed K and S and sh (-cion). It's why English has about a million words--the sun never set on the Union Jack. And this was an American list--probably if the editors had tossed in Canada, India, Ireland, Scotland, New Zealand and Australia they would have needed a few pages for "a"; but still nothing for "c".