Sidetrack or trackside are anagrams for those letters.
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He finds it hard to concentrate in class.
I will concentrate on my work.
This orange juice is from concentrate.
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I Concentrate on You was created in 1940.
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The preposition "of" is typically used with the verb "concentrate" when talking about the substance or thing on which one is focusing attention or effort. For example, "I need to concentrate of my studies."
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She needed to concentrate in order to finish her work on time.
The athlete needed to concentrate on improving her technique to win the race.
It's important to concentrate during exams to answer the questions accurately.