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

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

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

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

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