str = gets
m = str.gsub(/^ｗ*/u, "").scan(/ｗ*/u).map{|s|s.length}.max

if m == 0 then
	puts ""
else
	puts str.scan(/([^ｗ]*)ｗ{#{m}}/u).map{|s|s.first}.select{|s|s!=""}.join("\n")
end