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