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