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

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

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

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

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