Original sentence: Elements of the patterns may also be historical references, such as the number of moves, the diagram, the way the pattern ends, and so on.Patterns, or teul (틀) in Korean, originally called hyeong (형), form an important aspect of training in taekwondo.The names of these patterns typically refer either to events in Korean history or to important people in Korean history.They are equivalent to the kata in karate
Edited sentence: In karate they are equivalent to the kata.Patterns, 틀 or teul in Korean, originally called 형 hyeong, are considered by many to be one of the most important aspects of training in taekwondo.The names of these patterns typically refer either to an event in Korean history or to an important person in Korean history.They are listed in the article on patterns