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(ROOT_0 (S_0 (ATS_2 (ATS_3 (NP_1 (PRP_0 I)) (VP_4 (MD_0 would) (VP_1 (ATVP_3 (VBD_2 used) (PRT_0 (RP_0 up))) (S_2 (VP_0 (TO_0 to)))))) (DOT_0 .)) (APOSTROPHE_0 <apostrophe><apostrophe>)))