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

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

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

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

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