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