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

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

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

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

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