n, k = read_line.split.map(&.to_i)
sr, sc = read_line.split.map { |v| v.to_i - 1 }
tr, tc = read_line.split.map { |v| v.to_i - 1 }
if sr > tr
  sr, tr = tr, sr
  sc, tc = tc, sc
end
d = (sr - tr).abs + (sc - tc).abs
if d % 2 != k % 2
  puts -1
  exit
end
max = d + d // 2 * 2
if k > max
  puts -1
  exit
end
s = Array.new(n) { Array.new(n, '.') }
sr.upto(tr) do |y|
  {sc, tc}.min.upto({sc, tc}.max) do |x|
    sd = (sr - y).abs + (sc - x).abs
    next if sd % 2 == 0
    if (sd + 1) // 2 <= (k - d) // 2
      s[y][x] = '#'
    end
  end
end
s.each do |r|
  puts r.join
end