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