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

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

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

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

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