Need keyboard/bind suggestion

I have recently decided that it would be "fun" to remap all my binds (including binding +attack on left shift, a la sanctity). Anyways, my problem is as follows: now I have sprint on v, reload on r and movement on wasd, and I have discovered that I can't reload when I'm strafejumping. Basically if I am holding w,a and v, pressing r is ignored. Why does this happen? :( It looks like, for example, pressig e,s,b and t gives no roblem, so maybe I could solve the problem by moving all my binds 1 button to the right (movement on esdf etcetera), anyways it would be nice to know all the "forbidden" key combinations if soeone can point me to a good source ;)

P.S. I am sleepy :(