while line = STDIN.gets

	len = line.length

	while !(line =~ /(the|this|that)/)
	
		for i in 0..len-1 do
			if( line[i,1] =~ /[a-z]/)
				if(line[i,1] =~ /z/)
					line[i] = "a"
				else
					line[i] = line[i].succ
				end
			end
		end
	end
	
	puts line
	
end