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