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