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