If it's based on position mod 2, wouldn't inserting or deleting (or splitting/merging) words every now and then trivially defeat it? If it is based on position

If it's based on position mod 2, wouldn't inserting or deleting (or splitting/merging) words every now and then trivially defeat it? If it is based on position mod 2 then wouldn't inserting/deleting (or splitting and merging) words every now and then defeat it?