Hi, I'm looking for a list of unused keyboard keys to assign as shortcuts, every time I query a key it seems to already be assigned to something.

Cutrently im trying to assign shortcuts to:
(if any of them already have shortcuts please let me know. I would also be interested in what you have used as shotrcuts for these keys.)

Merge vertacies
Insert Loopcut
Extrude

Currently I have not been useing Maya long enough to know all the shortcuts I will need to asign as im new to the software so if you know any keys that I might also need that dont have pre-defined shortcuts please let me know. Thanks in advance.

Also just to tie in another question, has Maya got a copy location/scale/rotation tool to make it easier when overlaping meshes for bakeing?

Please give your surgestions on what shortcuts you use and what you think will work for me, thanks.