oop do
	fl_arr = Array.new(24,0)
	num = 0
	get = gets.split("")
	tmp = Array.new(get)
	break if tmp[0] == #
	
	while tmp[num] != "\n"
		for s in 'a'..'z' do
			if fl_arr[num] == 0 
				tmp[num].succ if tmp[num] == s
				fl_arr[num] = 1
			end
		end
	num += 1
	end
	
	puts tmp
end