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

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

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

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

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