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