while line = gets do
	26.times{
		if line.include?("the") || line.include?("this") || line.include?("that")
		  puts line
		  break
		end
		
		line.length.times{ |i|
			if "a" <= line[i] && line[i] < "z" then
				line[i] = line[i].next
			elsif line[i] == "z" then
				line[i] = "a"
			end
		}
	}
end