them could pushed really black giggles .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 them)) (VP_4 (MD_0 could) (VP_1 (ATVP_0 (VBD_2 pushed) (ADVP_0 (RB_0 really))) (NP_3 (JJ_1 black) (NNS_0 giggles))))) (DOT_0 .)))