It sounds like you might be looking for a specific PDF related to A. A. Puntambekar’s Theory of Computation textbook, possibly page 126 or a section referenced as "126".

Reviewers from platforms like Gate Vidyalay and Goodreads highlight several strengths:

You can find digital previews or purchase options on sites like Amazon or view community-uploaded excerpts on Scribd.

Anuradha A. Puntambekar’s "Theory of Computation" is a widely utilized engineering textbook in India, particularly tailored for university curricula and competitive exams like GATE. The text, which often covers context-free grammars and pushdown automata around page 126, is noted for its structured approach, providing over 300 solved problems for conceptual clarity. For more details, visit Amazon.com Theory of Computation for GTU 18 Course (VI - Amazon.com