1. lettern::bigram_frequencies
    Bigram frequencies
  2. lettern::letter_frequencies_by_position
    Letter counts/frequencies by position
  3. lettern::letter_frequencies_overall
    Letter counts/frequencies overall
  4. lettern::word_length_frequencies
    Word length frequencies in English, from Peter Norvig's analysis
  5. skittles::skittles
    Dataset of Skittles pack colour counts, with a pair of identical packs
  6. skittles::skittles_raw
    Dataset of Skittles pack colour counts, with a pair of identical packs