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