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

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

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

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

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