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

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

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

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

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