Thank you for this. Really cool.

I think there may be some confusion because some of the tabs collapsed so the 1's and 0's dont' line up under the right column. When I opened it, it looked like this:

Code:
Base Key	Shift	Ctrl	Alt	Shift-Ctrl	Shift-Alt	Shift-Ctl-Alt	Ctrl-Alt	Total Modes
a	1	1	1	1	1	1	1	8
Edit: just noticed the XLS format; which is better formated. sweet.