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<?php 
$ore = range(0, 12);
print_r($ore);
echo "<br>";
echo "<br>";
$ore = range(12, 0);
print_r($ore);
echo "<br>";
echo "<br>";
$mezzore = range (0, 12, 0.5);
print_r($mezzore);
echo "<br>";
echo "<br>";
$alfabeto = range("a", "z");
print_r($alfabeto);
 ?>