Answer:
I twist and turn and leaves a loop
A spirited jig I dance bright, banishing all but darkest night. Air can't kill me but water can. Share me, I won't get less unless wind ruins me. What am I?
Alone I am 24th with a friend I am 20. Another friend and I am unclean.
I am pronounced as one letter written with three. I come in blue black brown or grey. Reverse me and I read the same either way.
I am heavy forward, but backward I'm not. What am I?
The answer I give is yes, but what I mean is no. What was the question?