cross between xxx and vertical limit . 
(ROOT (NP (NP (NN cross)) (PP (IN between) (NP (NP (NN xxx)) (CC and) (NP (JJ vertical) (NN limit)))) (. .)))
(ROOT (NP (NP (NN )) (PP (IN ) (NP (NP (NN )) (CC ) (NP (JJ ) (NN )))) (. )))