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