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

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

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

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

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