my $it3 = append(upto(1,3), list_iterator( qw(foo bar baz)), upto (7,9));

##</code><code>##

Invalid append 1
$VAR1 = 1;
$VAR1 = 2;
$VAR1 = 3;
$VAR1 = 'foo';
$VAR1 = 'bar';
$VAR1 = 'baz';
$VAR1 = 7;
$VAR1 = 8;
$VAR1 = 9;