por

1. by (indicates the creator of a work)
2. for (indicates something given in an exchange)
3. through, out, via (indicating movement)
4. across (indicating movement)
5. about
6. due to, because of, for, for the sake of, out of (to express cause or motive)
7. over
8. times, by, multiplied by
9. according to, for, regarding (to express opinion or something concerning someone)
10. via, through, by (indicating the means of something)
11. for (indicating duration)
12. for, for the sake of, on behalf of (indicating doing something for someone's benefit)
13. per, for each
14. to (indicating something that has not yet passed)
15. about to (indicating something that will soon happen)
16. compared to; against; versus (indicating a comparison)

ello

• Pron

  it, neuter third-person subject and disjunctive pronoun (used only to refer to facts, sets of things, and indefinite things that have been mentioned before; generally used with prepositions and rarely used as a subject, except in literary style)

• Noun

utilizó

third-person singular preterite indicative of utilizar

el

masculine singular definite article; the

seudónimo

pseudonym