$ perl loadData.pl
Name "main::fum" used only once: possible typo at loadData.pl line 16.
Name "main::fo" used only once: possible typo at loadData.pl line 16.
Name "main::fi" used only once: possible typo at loadData.pl line 16.
Name "main::fee" used only once: possible typo at loadData.pl line 16.
Variable "$fee" is not imported at (eval 1) line 1, <DAT> line 1.
Global symbol "$fee" requires explicit package name at (eval 1) line 1, <DAT> line 1.
Variable "$fi" is not imported at (eval 2) line 1, <DAT> line 2.
Global symbol "$fi" requires explicit package name at (eval 2) line 1, <DAT> line 2.
Variable "$fo" is not imported at (eval 3) line 1, <DAT> line 3.
Global symbol "$fo" requires explicit package name at (eval 3) line 1, <DAT> line 3.
Variable "@fum" is not imported at (eval 4) line 1, <DAT> line 4.
Global symbol "@fum" requires explicit package name at (eval 4) line 1, <DAT> line 4.
$VAR1 = undef;
$VAR2 = undef;
$VAR3 = undef;