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