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