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

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

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

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

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