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