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