fork download 
  1. s='gvožđa gvozda gvozdja
  2. гвожђа'
  3. grep -Eo '[gг][vв][oо][žжz](dj|[dđђ])[aа]' <<< "$s"
Success #stdin #stdout 0s 4976KB
comments (?)
stdin 
Standard input is empty
stdout 
gvožđa
gvozda
gvozdja
гвожђа
https://ideone.com/QOTiBZ
language:
Bash (bash 5.0.3)
created:
4 years ago
visibility:
public

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