S, T, U, V, W, X, Y and Z are seated in a straight line with equal spacing (order unknown). Some face north, others south. Facing the same direction m...

S, T, U, V, W, X, Y and Z are seated in a straight line with equal spacing (order unknown). Some face north, others south. Facing the same direction means both face north or both face south; opposite directions mean one faces north and the other south.

Given:

• S faces north.
• Only two people sit to the right of S.
• T sits third to the left of S.
• Only one person sits between T and X.
• X sits immediately to the right of W.
• Only one person sits between W and Z.
• Both immediate neighbors of T face the same direction.
• U sits third to the left of X.
• T faces opposite direction to S.
• Y is not at either extreme end.
• V faces the same direction as W.
• Both Y and U face opposite direction to Z.

Question: Four of the following five pairs are similar in a certain way and form a group. Which pair does NOT belong to the group?