her if no narrowed back used to .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (NP_1 (PRP_0 her)) (ADVP_0 (IN_2 if) (RB_1 no))) (VP_3 (ATVP_1 (VBD_1 narrowed) (RB_1 back)) (VP_5 (VBD_2 used) (S_2 (TO_0 to))))) (DOT_0 .)))