inp=gets.chomp.split(" ")
n=0
flag=false

while !flag
	inp.map!{|str|
		res=String.new;
		str.each_char{|c|
			if c=="z" then
				res<<"a"
			elsif !(c==".")
				res<<(c.succ)
			end
		}
		res
	}
	p inp
	inp.each{|str|
		if (str=="this" || str=="that" || str=="the")
			flag=true;
		end
	}
end

puts inp.join(" ")+"."