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