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