the most important and exhilarating forms 
(ROOT (NP (DT the) (ADJP (ADJP (RBS most) (JJ important)) (CC and) (ADJP (JJ exhilarating))) (NNS forms)))
(ROOT (NP (DT ) (ADJP (ADJP (RBS ) (JJ )) (CC ) (ADJP (JJ ))) (NNS )))