to 2377: Service book

The twelve unclued lights can be arranged into the sequence yielding phrases from ‘First’ to ‘Twelfth’. First 21, Second 24, Third 4A, Fourth 37, Fifth 30, Sixth 15A, Seventh 3, Eighth 9, 19 Ninth, Tenth 34D, Eleventh 25, 29 Twelfth. ‘Second’ in the solutions at 8D and 17D indicates the sequence.
 
First prize Norman Melvin, Twickenham, Middlesex
Runners-up Peter Wild, Brighton, East Sussex; John Bartlett, Shirley, Solihull