You are given a 2-dimensional matrix: a list of lists of integers. Your function should return another Iterable of lists, where each inner list is a sequence of matrix elements on the same diagonal "stroke". The order of elements in the "stroke" is SW -> NE. So, building these sequences is like "hatching" the matrix!

Let's look at the example. The matrix may NOT be square!

Input: List of lists of integers.

Output: List or another Iterable (generator, iterator) of lists of integers.

Examples:

assert list(hatching([[0]])) == [[0]]
assert list(hatching([[1, 2], [3, 4]])) == [[1], [3, 2], [4]]
assert list(hatching([[1, 2, 3, 4, 5], [6, 7, 8, 9, 0]])) == [
    [1],
    [6, 2],
    [7, 3],
    [8, 4],
    [9, 5],
    [0],
]
assert list(hatching([[1, 2], [3, 4], [5, 6], [7, 8], [9, 0]])) == [
    [1],
    [3, 2],
    [5, 4],
    [7, 6],
    [9, 8],
    [0],
]