function print_pattern($rows, $row_patterns) {
    $row_length = count($row_patterns[$rows[0]]);

    print '<table class="o"><tr><td class="w">&nbsp;</td>';
    for ($i = 0; $i <= $row_length; $i++)
	printf('<td class="w">%02d</td>', $i);
    print "</td></tr>\n";

    foreach ($rows as $row) {
	print "<tr><td class=\"w\">$row</td>";
	foreach ($row_patterns[$row] as $colour)
	    print "<td class=\"$colour\">&nbsp;</td>";
	print "</tr>\n";
    }

    print "</table>\n";
}

$row_patterns = array('A' => array('o','o','x','o','o'),
		      'B' => array('o','x','o','x','o'),
		       /* og så videre */
		      );

print_pattern(array('A', 'B', 'A'), $row_patterns);