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