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

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

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

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

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