laughs -- sometimes a chuckle , sometimes a guffaw and , to my great pleasure , 
(ROOT (VP (VBZ laughs) (, --) (ADVP (RB sometimes)) (NP (DT a) (NN chuckle)) (, ,) (ADVP (RB sometimes)) (NP (DT a) (NN guffaw)) (CC and) (, ,) (PP (IN to) (NP (PRP$ my) (JJ great) (NN pleasure))) (, ,)))
(ROOT (VP (VBZ ) (, ) (ADVP (RB )) (NP (DT ) (NN )) (, ) (ADVP (RB )) (NP (DT ) (NN )) (CC ) (, ) (PP (IN ) (NP (PRP$ ) (JJ ) (NN ))) (, )))