(0 19 13 9 2)(1 7 3)(4 20 5)(6 17 15 11 8)(10 14 12)(16 21 18)
ALLOWS (11/8)-SEQUENCE
1: (0 1 2)
(0)(1 19 13 9 2 7 3)(4 20 5)(6 17 15 11 8)(10 14 12)(16 21 18)
2: (2 7 9)
(0)(1 19 13 9 3)(2)(4 20 5)(6 17 15 11 8)(7)(10 14 12)(16 21 18)
3: (6 17 8)
(0)(1 19 13 9 3)(2)(4 20 5)(6)(7)(8 15 11)(10 14 12)(16 21 18)(17)
4: (1 9 3)
(0)(1)(2)(3)(4 20 5)(6)(7)(8 15 11)(9 19 13)(10 14 12)(16 21 18)(17)