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

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

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

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

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