# Concept derivation guides

299 concept teaching guides, separate from the 36,000 individual question derivations.

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Concept guide



## [A bottom-first PDA run accepting aabb](/en/derivations/derivation-mko-pushdown-automaton-01/?from=%2Fen%2Fderivations%2F%3Fq%3Dmko-pushdown-automaton)

The specified PDA has a finite run consuming aabb and ending at final f with stack [Z].

Pushdown automaton

derivation-mko-pushdown-automaton-01





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