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

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

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

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

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