Trigrams are a special case of the N-gram, where N is 3. They are often used in natural language processing for doing statistical analysis of texts.
The 16 most common character-level trigrams in English are:[1]
| Rank | Trigram |
|---|---|
| 1 | the |
| 2 | and |
| 3 | tha |
| 4 | ent |
| 5 | ing |
| 6 | ion |
| 7 | tio |
| 8 | for |
| 9 | nde |
| 10 | has |
| 11 | nce |
| 12 | edt |
| 13 | tis |
| 14 | oft |
| 15 | sth |
| 16 | men |
The sentence "the quick red fox jumps over the lazy brown dog" has the following word level trigrams:
the quick red quick red fox red fox jumps fox jumps over jumps over the over the lazy the lazy brown lazy brown dog
And the word-level trigram "the quick red" has the following character-level trigrams (where an underscore "_" marks a space):
the qui k_r he_ uic _re e_q ick red _qu ck_