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