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