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