5,376 Bristol Surprise Major

Paul J Flavell
2345678  1  2  3  4  5  6
5637284           -       |
2436857  -     -     - (-)|A
2437586         2A
2364857          A*
4235867     s     s     -
Repeat twice. A* = A omitting (-). Contains 288 combinations of 5678 at the front and 576 at the back.