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

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

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

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

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