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

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

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

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

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