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

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

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

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

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