There are five questions below，

In a small office suite, six offices are arranged in a straight line, one after another, and are consecutively num- bered 1 through 6. Exactly six people― P, Q, R, S, T and U― are to be assigned to these six offices, exactly one person to an office, according to the following conditions:

P must be assigned to an office immediately adjacent to the office to which T is assigned.

Q cannot be assigned to an office immediately adja- cent to the office to which S is assigned.

R must be assigned either to office 1 or to office 6.

S must be assigned to a lower-numbered office than the office to which U is assigned.

If Q is assigned to office 2, then the person assigned to office 6 must be