5,088 Heywood Surprise Major

Donald F Morrison (no. 4502)
234567   V  M  W      F  H
23645    -  -  -  In  -
524736  In  -            -
462537   -     2         -
32456    s     s      s
56423    -     s      -  -
34256    -            -   
Repeat twice.

Contains all 24 each 56s and 8765s, 18 each 5678s off the front and 6578s off the front, 12 each 65s, 8756s, 8765s off the front and 8756s off the front, and back rounds, and is all the work.
Also contains 90 backstroke 87s, with half the 56s being at hand.