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

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

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

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

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