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