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

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

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

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

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