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

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

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

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

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