If Foo1.php, Foo2.php and Foo3.php are all copies of the 1000-line Foo.php, each with a different smattering of bug fixes, each included by a different 10 - 20%

If Foo1.php, Foo2.php and Foo3.php are all copies of the 1000-line Foo.php, each with a different smattering of bug fixes, each included by a different 10 - 20% of the overall codebase... am I allowed to count all 4 separately?