#!/usr/bin/perl -l

# http://perlmonks.org/?node_id=1166843

use strict;
use warnings;

my $z = 'Web-developer, perl-program, explicit-element, function-call, 2-x speed.';

print $z;

$z =~ s/\b
  (?!(?:web|2)-)
  (\w+)-
  (?!(?:program|call)\b)
  (\w+)\b
  /$2 $1/gix;

print $z;