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