they stepping up of streaming , such the beak and flats .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_1 they)) (VP_4 (ATVP_3 (ATVP_2 (ATVP_0 (VBG_0 stepping) (PRT_0 (RP_0 up))) (PP_1 (IN_1 of) (NP_2 (NN_3 streaming)))) (COMMA_0 ,)) (NP_3 (ATNP_0 (NP_6 (ATNP_1 (PDT_0 such) (DT_0 the)) (NN_1 beak)) (CC_0 and)) (NNS_0 flats)))) (DOT_0 .)))