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