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

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

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

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

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