She would really used to breathe .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 She)) (VP_4 (ATVP_1 (MD_0 would) (ADVP_0 (RB_0 really))) (VP_5 (VBD_2 used) (S_2 (VP_0 (TO_0 to) (VP_1 (VB_0 breathe))))))) (DOT_0 .)))