[10]
[100 200]
[22 33]
[11 111 222]
[333 444 99]
[555 666 777 888]
[10 11 12]
[10 11 20 30]
[10 222 333 99]
[10 22 33 44 55]
[100 200 33 44]
[100 200 33 444 555]
[100 200 33 44 55]
[100 200 333 444 555 666]
[]
[1]
[10]
[20]
[]