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In this article we introduce the difference sequence spaces W0[f,△m],W1 [f,△m],W∞[f,△m]and S[f,△m],defined by a modulus function f.We obtain a relation between w1 [f,△m]∩ (l)∞[f,△m]and S[f,△m]∩ (l)∞[f,△m]and prove some inclusion results.