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