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