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

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

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

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

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