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

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

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

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

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