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

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

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

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

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