s:1th/pattern/string/;
	s:2th/pattern/string/;
	s:3th/pattern/string/;
	s:4th/pattern/string/;
	# etc.

##</code><code>##

	s:1um/pattern/string/;
	s:2ieme/pattern/string/;
	s:3itter/pattern/string/;
	s:4issimo/pattern/string/;
	# etc.