Alphabet

If I was the host on Wheel of Fortune, I would totally knock contestants back if they asked for the letter "HAITCH"

Speaking of "double-u", I think there's some sort of identity crisis going on there, 'cos to me it looks more like two v's. But who am I to judge, you can be whatever you want to be, as long you you spell yourself correctly.
Fun fact, it's actually called a "double-u" because in Roman times the character "v" was used like "u" is now, so essentially it was a "double-v". Then of course English came along and screwed everything up leaving us with letters that don't know what to do with themselves.
Note, that fun fact has zero research behind it. I pretty much came up with it on the spot upon realising it myself. Fact check me if you dare - I'm to lazy to check, but my Batman detective skills tell me I'm probably right.

Chris