[1,2,3]
[1,3]
[2,3,4]
[(1,1),(1,2),(2,1),(2,2),(3,1),(3,2)]
[(1,1),(2,1),(2,2),(3,1),(3,2),(3,3)]
[1,2,3,1,2,3,4]
[[2,3],[3,4],[4,5]]
[5,13,103]
["5","def"]