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