Firstly, can you guys please learn how to edit quotes? This thread is just a giant wall of quote text! There is no need to quote the immediately preceding message in it's entirety each time you want to respond... 
The 17 words were from the old blockchain legacy wallet which was provided by blockchain upon signup as the backup passphrase incase to restore access to wallet and now when I want to restore the wallet blockchain.info is asking for 12 words only. It does not work with the 17 words. Any help will be appreciated
Instead of faffing about, following pointless instructions to attempt to import a 17 word mnemonic which is probably not BIP32/BIP39/BIP44 compatible... you should try using the B.info legacy wallet recovery system: https://blockchain.info/wallet/recover-wallet Quote from: https://blockchain.info/wallet/recover-wallet
If you have a legacy wallet recovery mnemonic saved enter it below to view the password and login link.