each other so intensely , but with restraint 
(ROOT (S (NP (DT each) (JJ other)) (ADVP (RB so) (RB intensely)) (, ,) (CC but) (PP (IN with) (NP (NN restraint)))))
(ROOT (S (NP (DT ) (JJ )) (ADVP (RB ) (RB )) (, ) (CC ) (PP (IN ) (NP (NN )))))