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