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

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

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

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

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