In Abhidhamma, the analysis differentiates 121 types of citta, each of which may be combined with any one of fifty-two cetasikas (the accompanying qualities of experience), thus producing the extremely large variety of mental events.
"Citta." The Concise Oxford Dictionary of World Religions. . Encyclopedia.com. (November 21, 2018). https://www.encyclopedia.com/religion/dictionaries-thesauruses-pictures-and-press-releases/citta
"Citta." The Concise Oxford Dictionary of World Religions. . Retrieved November 21, 2018 from Encyclopedia.com: https://www.encyclopedia.com/religion/dictionaries-thesauruses-pictures-and-press-releases/citta