NLP Question Please Help! And answer is not 2 or 4 btw

What is the frequency of in the following training data if we use the strategy where we choose a vocabulary before training? data: I am Sam Sam I am I do not like green eggs and ham vocabulary 1 am blue green do like ham cheese What is the frequency of in the following training data if we use the strategy where we choose a vocabulary before training? data: I am Sam Sam I am I do not like green eggs and ham vocabulary 1 am blue green do like ham cheese