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