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

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

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

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

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