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