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

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

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

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

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