[Shark69]

English is my second language. Because of this, I'd like to activate lemmas in a bulk way to test in several books. There are books with different level of difficulty. To do it word by word is a hard challenge. I would give you some examples. After loading this 4000 words, perhaps is not enough. How can I increase the number of words if the previous words have been not retained? Another example. If your process retains the previous words, but I want to increase or decrease the number of words.... How can I do it? Word by word? To increment or decrement, , a way would be based in occurrences of the word in a specific book or in the complete language (I do not where we can get this info). The more frequent, the level should be lower... perhaps.