How do you tell what multiclass combinations people are talking about?

[Question2005]

I was talking about druid multiclasses with someone and he said the following would be good druid multiclasses :

13/6/1 ravager
11/8/1 FB

But I have no idea what this means. Obviously there are barb levels in there and im guessing ravager/FB means the t5 chosen...but how are you supposed to tell what the split is? Is it 13 barb or 13 druid or what? He wouldn't say.

He also said "12/8 kensei" but wouldn't explain if he meant 12 druid/8 fighter with t5 kensei or something else.