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

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

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

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

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