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