Table 1. Summary of English texts employed.
| Title | Abbreviation | Author |
| Alice's adventures in wonderland | AAW | Lewis Carroll (1832–1898) |
| The adventures of Tom Sawyer | ATS | Mark Twain (1835–1910) |
| A Christmas carol | CC | Charles Dickens (1812–1870) |
| David Crockett | DC | John S. C. Abbott (1805–1877) |
| An enquiry concerning human understanding | ECHU | David Hume (1711–1776) |
| Hamlet | H | William Shakespeare (1564–1616) |
| The hound of the Baskervilles | HB | Sir Arthur Conan Doyle (1859–1930) |
| Moby-Dick: or, the whale | MB | Herman Melville (1819–1891) |
| The origin of species by means of natural selection | OS | Charles Darwin (1809–1882) |
| Ulysses | U | James Joyce (1882–1941) |
The data set of English texts employed in our study.