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

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

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

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

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