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

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

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

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

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