oh my  uh-huh uh-huh
( oh ( my ( uh-huh uh-huh ) ) )
(ROOT (S (VP (VB oh) (NP (PRP$ my) (JJ uh-huh) (NN uh-huh)))))
Oh wow, go on. 
( Oh ( ( ( wow , ) ( go on ) ) . ) )
(ROOT (S (INTJ (UH Oh)) (VP (VP (VB wow)) (, ,) (VP (VB go) (PRT (RP on)))) (. .)))