I added several lists of those words that we all trip over and get confused by. I STILL have trouble with "through" and "thorough!"
I have separated them by the letter they begin with. You can search these lists by the below names, or see them all by searching my name: Kerry Jones

Here are the lists:
Confusing Words - A
Confusing Words - B
Confusing Words - C
Confusing Words - D
Confusing Words - E
Confusing Words - F
Confusing Words - H/I
Confusing Words - L/M
Confusing Words - P
Confusing Words - R/S/T/V