but if back she would tell every api knees .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (CC_0 but) (ADVP_0 (IN_2 if) (RB_1 back))) (NP_0 (PRP_1 she))) (VP_3 (MD_0 would) (VP_1 (VB_0 tell) (NP_3 (ATNP_0 (DT_0 every) (NN_3 api)) (NNS_0 knees))))) (DOT_0 .)))