lower and colder they could stepping up her minutes .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ADVP_0 (ATADVP_4 (JJR_0 lower) (CC_0 and)) (JJR_0 colder)) (NP_0 (PRP_1 they))) (VP_3 (MD_0 could) (VP_1 (ATVP_0 (VBG_0 stepping) (PRT_0 (RP_0 up))) (NP_3 (PRPDOLLAR_0 her) (NP_4 (NNS_1 minutes)))))) (DOT_0 .)))