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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_orig_items(base):
 """Retrieve original items from a diffed set of nested samples. """

    assert "group_orig" in base
    out = []
    for data_diff in base["group_orig"]:
        new = utils.deepish_copy(base)
        new.pop("group_orig")
        out.append(_patch_dict(data_diff, new))
    return out