(0 12 11)(1 18 3)(2 9 4)(5 15 7)(6 19 8)(10 16 13)(14 20 17)
ALLOWS (11/8)-SEQUENCE
1: (3 5 15)
(0 12 11)(1 18 3 7 5)(2 9 4)(6 19 8)(10 16 13)(14 20 17)(15)
2: (2 9 4)
(0 12 11)(1 18 3 7 5)(2)(4)(6 19 8)(9)(10 16 13)(14 20 17)(15)
3: (3 7 18)
(0 12 11)(1 18 5)(2)(3)(4)(6 19 8)(7)(9)(10 16 13)(14 20 17)(15)
4: (6 19 8)
(0 12 11)(1 18 5)(2)(3)(4)(6)(7)(8)(9)(10 16 13)(14 20 17)(15)(19)