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[Alexandr Korol]

9. Four kingdoms of nature: Minerals, plants, animals, and humans — traditional groups of living and non-living nature.
10. Four basic tastes: Sweet, sour, salty, and bitter, once considered the primary tastes, though umami is now added.
11. Four times of day: Morning, day, evening, and night, which structure our daily cycle.
12. Four phases of the Moon: New moon, first quarter, full moon, and last quarter, describing the lunar cycle.
13. Four functions of consciousness according to Jung: Thinking, feeling, intuition, and sensation — used in Carl Jung’s theory of psychological types. 14. Four major childhood nightmares: According to some psychological theories — abandonment, loss of control, humiliation, and death.
15. Four pillars of Islam: Shahada, Salat, Zakat, and Sawm, though there are usually five, including Hajj as well.
16. Four blocks in DNA: Adenine, thymine, guanine, and cytosine, which make up the genetic code.
17. Four battalions in military structure: In some armies, a battalion can be divided into four companies.
18. Four Horsemen of the Apocalypse: In the biblical Book of Revelation, they symbolize conquest, war, famine, and death.
19. Four clan banners: In some fantasy stories, clans or houses may be divided into four banners or groups.
20. Four winds: In some cultures, these symbolize the different directions — north, south, east, and west.
21. Four races of people in game universes: Often in video games, you can find four races such as elves, orcs, dwarves, and humans.
22. Four hat-professions: In some societies, different professions can be symbolically represented by four hats, for example, farmer, warrior, scholar, and priest.
23. Four sides of a square: In geometry, a square has four sides of equal length and four 90-degree angles.
24. Four segments of a compass: A compass can be divided into four equal parts for constructing a circle.