yeah okay you go ahead
( yeah ( okay ( you ( go ahead ) ) ) )
(ROOT (S (VP (VB yeah) (ADJP (JJ okay) (SBAR (S (NP (PRP you)) (VP (VBP go) (ADVP (RB ahead)))))))))
Yeah, you go ahead, okay. 
( Yeah ( , ( you ( ( ( ( go ahead ) , ) okay ) . ) ) ) )
(ROOT (S (INTJ (UH Yeah)) (, ,) (NP (PRP you)) (VP (VBP go) (ADVP (RB ahead)) (, ,) (S (ADJP (JJ okay)))) (. .)))