Private key what does it look like

Hello I new on here and from the UK. I have saved my Private key, but I forgot to write Litecoin next to the key. I have 2 other Crypto currencies keys and I cannot work out what they are? Is there away of telling which is the Litecoin private key please? Cheers

Private key looks like this:


this one was generated for demostration propouses only, and it is obviously not private anymore.