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

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

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

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

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