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