Japanese words and Japanese Grammar for Mae Ni To Verb before real quick

BEFORE ~verb~ - ~verb~ MAE NI 前に

suru mae ni する前に - before I do
before you do,
before he/she does,
before they do,
before any of them do,

asobu mae ni 遊ぶ前に - before I play,
before you play,
before he/she plays,
before they play,
before any of them play,

tsukuru mae ni 作る前に - before I make,
before you make,
before he/she makes,
before they make
before all of em' play

I,you,he,she,they,it,and all the rest.