N, K = gets.split.map(&:to_i)
A = Array.new(N) { gets.chomp }
B = []
b = "#" * K
w = "." * K
N.times do |i|
	row = ""
	N.times do |j|
		row << (A[i][j] == ?# ? b : w)
	end
	K.times do
		B << row
	end
end

puts B.join("\n")