User-agent: *
Disallow: /backup/
Disallow: /layerA/
Disallow: /layerB/
Disallow: /layerC/
Disallow: /layerD/
Disallow: /layerE/
Disallow: /layerF/
Disallow: /layerG/
Disallow: /layerH/
Disallow: /layerI/