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

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

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

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

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