# frozen_string_literal: true
in_h, in_w = gets.chomp.split.map(&:to_i)
in_s =
  in_h
    .times
    .map do
      line = gets.chomp.chars
      new = +""
      until line.empty?
        c = line.shift
        if c == "9"
          line.shift(5)
          new << "9Yiwiy"
        elsif c == "y"
          line.shift(5)
          new << "yiwiY9"
        else
          new << "."
        end
      end
      new
    end
    .join("\n")
    .chomp

puts in_s