| skos:altLabel | - alphabet
- strings
- Languages
- language
- word
- words
- Language
- languages
- Reversal
- formal
- string
- informal
- reversal
- formalization
- symbolic system
- transformation rules
- formal methods
- (formal) language
- Formal
- Formal Languages
- Formal language#Constructions
- Formal language#Words over an alphabet
- Formal_language#Applications
- Formal_language#Operations_on_languages
- finite word
- formal language
- formal language theory
- formal languages
- formal programming language
- formal terms
- formalize
- formalized language
- formation rules
- logical language
- set of words
- string of characters
- type formalism
- words over
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