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

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

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

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

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