A simple script that scans a piece of text (a local file in the same location as the script, or a string literal enclosed in quotes) and displays the top k word n-grams (word sequences of length n) from the text, including their absolute and relative frequencies. For example, in the following sentence

"It is raining today, and I will need an umbrella."

the word 4-grams are "It is raining today", "is raining today and", "raining today and I", "and I will need", "I will need an", "will need an umbrella." Case and punctuation marks and ignored when comparing word grams, so that the word 4-grams "It is raining today," and "it is raining today" are considered the same.

An example:

The top 10 word 5-grams and their frequencies (absolute and relative) are as follows.

    it's important to be confident 4 (0.014)
    a photo is real or 4 (0.014)
    be confident and stand up 4 (0.014)
    photo is real or retouched 4 (0.014)
    important to be confident and 3 (0.01)
    idea of what beauty is 3 (0.01)
    confident and stand up to 3 (0.01)
    think words can never hurt 3 (0.01)
    to be confident and stand 3 (0.01)
    and stand up to bullies 3 (0.01)