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

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

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

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

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