Just for you, today, I'll teach how to differentiate left from right in nipponese.

left right
左右
See those two strokes at the top crossing each other? 一 and ノ. Get rid of them.

左右
エロ
エロ
ERO

So from now, when you can't tell left from right, think ero and you'll find your way.
Don't thank me, thank Ero.