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We study the nonlinear Schr(o)dinger systems which consist of three equations with variational structure. The functional for our systems has three coupling terms. In particular, we consider the case where the coefficient of two coupling terms are negative and the coefficient of one coupling term is positive. I would like to talk about the existence of positive solutions and the shape of the solutions when positive coefficient are sufficiently large. This is joint work with Prof. J. Byeon and Prof. Z.-Q. Wang .