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

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

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

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

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