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