transpose -base -containers

transpose :: [ByteString] -> [ByteString]
bytestring Data.ByteString, bytestring Data.ByteString.Char8, bytestring Data.ByteString.Lazy, bytestring Data.ByteString.Lazy.Char8
The transpose function transposes the rows and columns of its ByteString argument.
transpose :: [Text] -> [Text]
text Data.Text, text Data.Text.Lazy
O(n) The transpose function transposes the rows and columns of its Text argument. Note that this function uses pack, unpack, and the list version of transpose, and is thus not very efficient.