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