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

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

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

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

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