local n, k = io.read("*n", "*n", "*l")
for i = 1, n do
  local s = io.read()
  for row = 1, k do
    local t = {}
    for col = 1, n do
      local v = s:sub(col, col)
      table.insert(t, v:rep(k))
    end
    print(table.concat(t))
  end
end