transpose package:base-prelude

The transpose function transposes the rows and columns of its argument. For example,
>>> transpose [[1,2,3],[4,5,6]]
[[1,4],[2,5],[3,6]]
If some of the rows are shorter than the following rows, their elements are skipped:
>>> transpose [[10,11],[20],[],[30,31,32]]
[[10,20,30],[11,31],[32]]