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