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  1. testo <- 'ricomprate uno comprato comprata due comprate ricomprate tre ricomprato comprati'
  2. gsub('(?<!\\S)((?:ri)?comprat)[aeio](?!\\S)', '\\1+', testo, perl=TRUE)
  3. gsub('\\b((?:ri)?comprat)[aeio]\\b', '\\1+', testo)
Success #stdin #stdout 0.25s 39384KB
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[1] "ricomprat+ uno comprat+ comprat+ due comprat+ ricomprat+ tre ricomprat+ comprat+"
[1] "ricomprat+ uno comprat+ comprat+ due comprat+ ricomprat+ tre ricomprat+ comprat+"
https://ideone.com/aW17y9
language:
R (R 3.5.2)
created:
4 years ago
visibility:
public

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