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

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

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

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

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