tr = ''
br = ''
cr = nil
1.step(100,1) do |c| 
  mf = c % 5 == 0
  mt = c % 3 == 0
  f = c > 9 ? "  " : " "
  d = mt && ((c - 1) % 5 == 0 || (c - 2) % 5 == 0)
  if d 
    puts tr
    tr = br + c.to_s
    br = " " * tr.length
    next
  else 
    cr = mf ? tr : (mt ? br : cr)
  end
  cr == br ? br << c.to_s && tr << f : tr << c.to_s && br << f  
end
puts tr + "\n" + br