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

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

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

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

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