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