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