then four months was back before holes .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ADVP_0 (RB_0 then)) (NP_0 (CD_0 four) (NNS_0 months))) (VP_3 (ATVP_3 (VBD_2 was) (PRT_0 (RP_0 back))) (PP_2 (IN_0 before) (NP_3 (NNS_1 holes))))) (DOT_0 .)))