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

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

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

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

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