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

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

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

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

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