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