5,184 Cambridge Surprise Major

Donald F Morrison (no. 4563)
234567
654273  s2.s3.3%.4.4%.5.5%.s6.s6%.s7.8.s8%.s9%.10.s12.s12%.s13%.s14.14%.s17.18    (18 leads)
254367  %.1.1%.2.s3                                                                (3)
36452   %.1.1%.2.2%.s3                                                             (3)
34256   %.1.s1%.s2.2%                                                              (3)
Repeat five times, adding s
half-way and end.

Contains all 24 each 56s, 65s and 8765s, 12 each 5678s off the front and 8765s off the front, and back rounds.
Also contains 60 backstroke 87s, and half the 56 rollups come at handstroke.