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

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

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

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

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