LETTER PAIRS I

The following five words have the same two letters repeated at some point. Those two letters have been removed, replaced by two sets of asterisks.  The same two letters are repeated in each word, but a different set of letters appears in each different word. Unlike success and words like it, each repeated letter pair in these words consists of two different letters. For example, given the clue **SCRE**T, the answer would be DISCREDIT - the letters DI repeated twice.

1. **CET**CK
2. **ME**GHT
3. **R**LADE
4. **N**URSE
5. **R**TUAL

HINTS:
The first letters of each repeated pair are:
1. R
2. L
3. M
4. C
5. P

Answers:

1. RACETRACK
2. LIMELIGHT
3. MARMALADE
4. CONCOURSE
5. PERPETUAL