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

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

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

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

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