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

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

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

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

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