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Heterogram / Isogram

No letter may repeat. Scope is the whole text or each word (scope: "text" | "word").

Text
filter
algorithmic
★★★★★4/5

Source: Oulipo / classic wordplay (isogram)

#letter
#no-repeat
#isogram
#heterogram

Examples

  • "uncopyrightable" is a 15-letter isogram.
Operating level: character

Interactive Playground

No configurable parameters
Click "Apply" to test the constraint on your input.
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