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

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

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

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

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