while (text=gets.chomp)!='BYE'
	if text == ""
		puts "DID YOU SAY SOMETHING?"
	elsif text == text.upcase then
		puts "NO, NOT SINCE 19#{rand(21)+30}"
	elsif text == text.downcase || text == text.capitalize
		puts "SPEAK UP, I CAN'T HEAR YOU"
	else
		puts "STOP MUMBLING AND SPEAK UP!"
	end
end