If in the word EQUALITY, the positions of the first and the fifth letters are interchanged; similarly the positions of the second and the sixth letters are interchanged and so on. Which letter will be third from the right end

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S,T,U,V,W, X,Y and Z are seated in a straight line but not necessarily in the same order, some of them are facing south while some are facing north. S sits fourth to the left of X. X sits at one of the extreme ends of the line. Both the immediate neighbours of S face south. T sits second to the left of Z. Z is not an immediate neighbour of S. Neither Z nor U sits at the extreme end of the line. Both the immediate neighbours of U face north. W sits to the immediate left of Y. Immediate neighbours of V face opposite directions (i.e. if one neighbour of V faces north then the other faces south and vice-versa.) Immediate neighbours of T face opposite directions (i.e., if one neighbour of T faces north then the other faces south and vice-versa. People sitting at the extreme ends face the same directions (i.e. if one person faces north then the other also faces north and vice-versa.)