However, there are some word pairs which alert you to the fact that a parallel is being set up. They are:
Whatever follows the first and the second part of these pairs must have the same grammatical form. Thus, if you have an adjective following one, you need an adjective to follow the other, and so on. See the following correct examples:
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Large number of solved practice MCQ with explanations. Video Lessons and 10 Fully explained Grand/Full Tests.