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

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

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

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

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