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

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

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

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

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