Final answer:
The formal structure consists of an introduction and three sections: A1, B, and A2. Each section has a specific range of assigned pages. The recurring themes or distinguishing features are not specified, but the introduction provides background information and sets the tone, while the sections may expand on topics.
Step-by-step explanation:
The formal structure in question follows the pattern of an introduction followed by three sections: A1, B, and A2. Each section has a specific range of assigned pages. The introduction occurs within pages 1-2, section A1 spans pages 3-18, section B spans pages 19-44, and section A2 spans pages 45-62.
In terms of recurring themes or distinguishing features, it is not specified in the given information. However, in general, the introduction typically provides background information, sets the tone, and introduces the main topics to be covered. Section A1 may expand on the first topic, section B may focus on a separate topic or provide counterarguments, and section A2 may revisit and expand on the initial topics or provide additional analysis.