H, W = gets.split.map(&:to_i)
S = H.times.map { gets.chomp }
counter_y = Array.new(H, 0)
counter_x = Array.new(W, 0)
points = []

H.times do |y|
  W.times do |x|
    next if S[y][x] == '-'

    points << [y, x]
    counter_y[y] += 1
    counter_x[x] += 1
  end
end

H.times do |y|
  next if counter_y[y] != 1

  W.times do |x|
    next if counter_x[x] != 1
    next if S[y][x] == '*'

    S[y][x] = '*'
    puts S
    exit
  end
end

dy = points[1][1] - points[0][1]
dx = points[1][0] - points[0][0]

H.times do |y|
  next if counter_y[y] == 2

  W.times do |x|
    next if counter_x[x] == 2
    next if S[y][x] == '*'
    next if points[0][1] - dy == y && points[0][0] - dx == x
    next if points[1][1] + dy == y && points[1][0] + dx == x

    S[y][x] = '*'
    puts S
    exit
  end
end