Feature: word n-grams

[parhamr]

From Wikipedia:

In the fields of computational linguistics and probability, an n-gram is a contiguous sequence of n items from a given sequence of text or speech. The items can be phonemes, syllables, letters, words or base pairs according to the application. The n-grams typically are collected from a text or speech corpus.

See also: https://github.com/tkellen/ruby-ngram