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