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

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

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

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

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