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

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

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

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

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