like ngrams, but for phrases

n-log.rb

#!/usr/bin/env ruby
require 'enumerator'

max = ARGV[0].to_i || 5
while string = STDIN.gets
  bits = string.chomp.split
  (2..max).each do |i|
    bits.each_cons(i) do |nlog|
      puts nlog.join(" ")
    end
  end
end