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