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

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

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

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

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