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

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

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

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

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