's very beavis and butthead , yet always 
(ROOT (VP (VP (VBZ 's) (NP (RB very) (NN beavis) (CC and) (NN butthead))) (, ,) (ADVP (CC yet) (RB always))))
(ROOT (VP (VP (VBZ ) (NP (RB ) (NN ) (CC ) (NN ))) (, ) (ADVP (CC ) (RB ))))