with open("ecriture_et_difference.txt", "r") as source:
    for line in source:
        line = line.strip()
        sentence = line.split()
        print(sentence)
        sentence = sentence.replace("c", "ss").replace("qu", "kh")
        print(sentence)

with open(fichier_texte, "w") as destination:
            destination.write(sentence)