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

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

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

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

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