Windows Shortcuts for Left-Handers

I've been mousing with my left hand for more than a dozen years, initially changing to combat strain on my right wrist.  I have come to love having my right hand free to press Enter, Delete, Page Up, Page Down and the arrow keys without losing a hand on the mouse. But I lost the often-used Cut (Ctrl+X), Copy (Ctrl+C), Paste (Ctrl+V) and the tab switcher (Alt+Tab) in the process, now having to move my left hand off the mouse to perform these. But there are alternatives for the first three:

Cut: Shift+Delete
Copy: Ctrl+Insert
Paste: Shift+Insert

Why does it take me years to uncover these kinds of tips? Sigh.

http://lifehacker.com/three-keyboard-shortcuts-left-handers-can-actually-use-1548841723