1User-agent: * 2Disallow: /1. 3Disallow: /0. 4Disallow: /book/first-edition/ 5Disallow: /book/second-edition/ 6Disallow: /stable/book/first-edition/ 7Disallow: /stable/book/second-edition/ 8Disallow: /beta/book/first-edition/ 9Disallow: /beta/book/second-edition/ 10Disallow: /nightly/book/first-edition/ 11Disallow: /nightly/book/second-edition/ 12