How many persons are designated between U and the one who works as PO?

Study the following information carefully and answer the questions given below. Eight persons – S, T, U, V, W, X, Y and Z are working in different designations in a bank, but not necessarily in the same order. The designations are CEO, COO, MD, GM, BM, PO, SO and Clerk. CEO is the senior-most designation whereas Clerk is the junior-most designation. Y is three persons senior to Z. Only one person is designated between Z and W. More than two persons are designated between W and X, who is junior to Y. As many persons designated between Y and X is same as between U and Z. V is two persons junior to T. As many persons senior to T is same as junior to W.