(0 20 11 6 2)(1 8 3)(4 19 5)(7 17 15 13 9)(10 14 12)(16 21 18)
ALLOWS (11/8)-SEQUENCE
1: (0 2 6)

(0 2 20 11 6)(1 8 3)(4 19 5)(7 17 15 13 9)(10 14 12)(16 21 18)
2: (1 8 3)

(0 2 20 11 6)(1)(3)(4 19 5)(7 17 15 13 9)(8)(10 14 12)(16 21 18)
3: (0 11 6)

(0)(1)(2 20 11)(3)(4 19 5)(6)(7 17 15 13 9)(8)(10 14 12)(16 21 18)
4: (7 17 9)

(0)(1)(2 20 11)(3)(4 19 5)(6)(7)(8)(9 15 13)(10 14 12)(16 21 18)(17)