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