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

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

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

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

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