[Verse 1]
Multiple patterns hunting through your text at once
Aho-Corasick algorithm, no time to punt
Build a trie first, every pattern gets a node
Failure links connect when prefixes decode
Suffix links redirect when matches disappear
Output links collect results crystal clear
[Chorus]
Trie construction, failure function, output too
Three phases make the magic work for me and you
Linear time scanning, never backtrack the stream
Aho-Corasick automaton living the dream
[Verse 2]
Start with root, insert each pattern character by character
Failure function calculates where partial matches transfer
When current state can't match the next incoming letter
Failure link points back to longest proper better
Breadth-first traversal builds these links with precision
Every state connected through algorithmic vision
[Chorus]
Trie construction, failure function, output too
Three phases make the magic work for me and you
Linear time scanning, never backtrack the stream
Aho-Corasick automaton living the dream
[Bridge]
Dictionary matching problems get solved with ease
Virus scanners, DNA sequences, whatever you please
Preprocessing once, then search a million times
Linear complexity, algorithmic rhymes
[Verse 3]
Scanning phase moves forward, never looking back
Follow failure links when characters don't match
Output links trigger when patterns are found
Multiple matches simultaneously, results compound
State machine handles every possible case
Efficient string matching at blazing pace
[Chorus]
Trie construction, failure function, output too
Three phases make the magic work for me and you
Linear time scanning, never backtrack the stream
Aho-Corasick automaton living the dream
[Outro]
When KMP meets trie structures in harmony
Multiple pattern matching, computational symphony