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

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

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

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

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