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

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

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

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

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