Greek has been used in Egypt from the time of Alexander the Great to beyond the Islamic conquest. During this millennium, Greek, like any language, evolved. It was also in contact with other languages (Demotic Egyptian, Latin, Coptic, Arabic…), a multilingual situation that encouraged the emergence of loanwords and the modification of some formulas. Besides, a wide range of text types were written on papyri and ostraca, from deluxe editions of literature to text receipts, accountings and private letters, using various writing styles. How can these shades of Greek be taken into account in a computer-assisted exploration of this material?