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

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

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

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

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