oh really yeah i've i've never seen either one of them
( oh ( really ( yeah ( i ( 've ( i ( ( 've never ) ( seen ( ( either one ) ( of them ) ) ) ) ) ) ) ) ) )
(ROOT (S (NP (NNP oh)) (VP (ADVP (RB really)) (VBP yeah) (SBAR (S (NP (FW i)) (VP (VBP 've) (NP (NP (FW i)) (SBAR (S (VP (VBP 've) (ADVP (RB never)) (VP (VBN seen) (NP (NP (DT either) (NN one)) (PP (IN of) (NP (PRP them)))))))))))))))
I've never looked at either of them.
( I ( ( ( 've never ) ( looked ( at ( either ( of them ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP 've) (ADVP (RB never)) (VP (VBN looked) (PP (IN at) (NP (NP (DT either)) (PP (IN of) (NP (PRP them))))))) (. .)))