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