They slithered He had to really was really .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 They)) (VP_4 (VBD_2 slithered) (S_2 (NP_1 (PRP_0 He)) (VP_2 (ATVP_2 (VBD_1 had) (S_2 (VP_0 (TO_0 to) (VP_1 (ADVP_0 (RB_0 really)) (VBD_1 was))))) (ADVP_0 (RB_0 really)))))) (DOT_0 .)))