21ème lettre grecque
Source google image: https://i.etsystatic.com/11392819/r/il/0bd468/1311928221/il_794xN.1311928221_rhtu.jpg
21ème lettre grecque
21ème lettre grecque
Source google image: https://i.etsystatic.com/11392819/r/il/0bd468/1311928221/il_794xN.1311928221_rhtu.jpg