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