5,184 Gemini Surprise Major

Donald F Morrison (no. 1281)
234567  V          M  W  F  H
674523                s  -  s
275634  -   B,sT            s
743526  -  B,sT,In    -  -  -
423657  s   B,In   -  s      
Repeat five times.

Contains 18 each 56s and 65s, and 9 each 8765s, 8756s, 8765s off the front and 8756s off the front, including back rounds, with no backstroke 87s, and is all the work.