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