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

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

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

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

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