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

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

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

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

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