Parallelism
Pattern
A, A, A — repeated grammatical form
Definition
Using the same grammatical structure in two or more clauses or phrases to create a sense of harmony and rhythm.
Examples
Example 1
That government of the people, by the people, for the people, shall not perish from the earth.
Abraham Lincoln, Gettysburg Address
Each prepositional phrase follows the identical "of/by/for the people" structure
Example 2
She likes cooking, jogging, and reading.
Everyday example where three gerunds maintain consistent grammatical form
Example 3
We shall fight on the beaches, we shall fight on the landing grounds, we shall fight in the fields and in the streets.
Winston Churchill, 1940
Parallel "we shall fight" clauses each followed by a prepositional phrase of location
AI Detection Note
Extremely common in AI text. LLMs default to parallel structure with high frequency, often producing lists of three with identical grammatical forms. Overuse of neat parallelism is a strong AI signature.
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