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

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

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

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

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