The shuffle command shuffles the order of words so that each time the test is run, the words will appear in a different order. In the example below we load the 100 most common words - shuffle their order - before selecting four of them. We do this three times using the times Ruby method.
require 'cw'
3.times do
cw do
load_most_common_words
shuffle
word_count 4
test_letters
end
end