"M4 15H1a1 1 0 0 1-1-1V3a1 1 0 0 1 1-1h3v1H1v11h3zM15 2h-3v1h3v11h-3v1h3a1 1 0 0 0 1-1V3a1 1 0 0 0-1-1m-3 3H4v1h8zm0 2H4v1h8zm0 2H4v1h8zm0 2H4v1h8z"