At a concert, exactly eight compositions – F, H, L, O, P, R, S, and T – are to be performed exactly once each, consecutively and one composition at a time. The order of their performance must satisfy the following conditions:
T is performed either immediately before F or immediately after R.
At least two compositions are performed either after F and before R, or after R and before
F. O is performed either first or fifth.
The eighth composition performed is either L or
H. P is performed at some time before S.
At least one composition is performed either after O and before S, or after S and before O.
If O is performed immediately after T, then F must be performed either
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first or second
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second or third
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fourth or sixth
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fourth or seventh
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sixth or seventh
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O is performed either first or fifth.
The eighth composition performed is either L or -
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P is performed at some time before S.
At least one composition is performed either after O and before S, or after S and before O.
If O is performed immediately after T, then F must be performed either