frequent flurries of creative belly laughs 
(ROOT (NP (NP (JJ frequent) (NNS flurries)) (PP (IN of) (NP (JJ creative) (NN belly) (NNS laughs)))))
(ROOT (NP (NP (JJ ) (NNS )) (PP (IN ) (NP (JJ ) (NN ) (NNS )))))