>>> 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]]For this reason the outer list must be finite; otherwise transpose hangs:
>>> transpose (repeat []) * Hangs forever *