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