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