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