that friends mutter since really Maybe was .
(ROOT_0 (S_0 (ATS_3 (NP_1 (DT_1 that) (NNS_0 friends)) (VP_4 (VBP_0 mutter) (SBAR_0 (IN_2 since) (S_1 (ATS_1 (ADVP_0 (RB_0 really)) (ADVP_0 (RB_0 Maybe))) (VP_3 (VBD_0 was)))))) (DOT_0 .)))