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