and them should to help the friend to the houses .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (CC_0 and) (NP_1 (PRP_0 them))) (VP_3 (MD_0 should) (VP_1 (TO_0 to) (VP_1 (VB_0 help) (NP_3 (NP_5 (DT_0 the) (NN_2 friend)) (PP_2 (TO_0 to) (NP_2 (DT_0 the) (NNS_1 houses)))))))) (DOT_0 .)))