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

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

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

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

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