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