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

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

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

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

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