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