This above image is a photo representation I created of the vocabulary of The Gospel of Mark. The larger the word, the more it is used (e.g. "kai" is used significantly more than any other word and that's why it's the largest) and the smaller the word, the less it is used. The text is based on NA27 / UBS4.
Also, here is a link to a .pdf version of Mark's Gospel that I created. This version is different from others in that it is the Greek text with no headings/subheadings or verse/chapter numbers: The Gospel of Mark In Greek.