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

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

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

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

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