like locusts in a horde these things will keep coming 
(ROOT (S (PP (IN like) (NP (NP (NNS locusts)) (PP (IN in) (NP (DT a) (NN horde))))) (NP (DT these) (NNS things)) (VP (MD will) (VP (VB keep) (S (VP (VBG coming)))))))
(ROOT (S (PP (IN ) (NP (NP (NNS )) (PP (IN ) (NP (DT ) (NN ))))) (NP (DT ) (NNS )) (VP (MD ) (VP (VB ) (S (VP (VBG )))))))