Anything to save keystrokes, right?
:facepalm:
I know, huh! Too bad that not only is "iz" not saving a keystroke, but the "z" is only one key away from the correct letter.
Btw iz ,just like cuz is a word lol!
It's not cool to type or speak like that when you grow up.
Your answers are here. If correct usage of letters and words are confusing you...