Just tried it on your site, Dominique. Does not work as expected, see screenshot.

Just tried it on your site, Dominique. Does not work as expected, see screenshot.

Wrong formula, sorry, correct formula should be:
(15:(39|(4(0|1|2|3|4|5|6|7|8|9)))|15:(5(0|1|2|3|4|5|6|7|8|9))|15:(5(0|1|2|3|4|5|6|7|8|9))|16:0(0(0|1|2|3|4|5|6|7|8|9)))