What did Marais and Wilken (2022) say in the article Morphology-based investigation of differences between spoken and written isiZulu,

Marais and Wilken (2022) discussed the differences between spoken and written isiZulu by focusing on morphology-based investigations. They found that there are significant differences in the morphology of spoken and written isiZulu, particularly in terms of verb forms, noun class prefixes, and concord markers. The researchers also emphasized the importance of considering these differences in language teaching and learning contexts to ensure effective communication in both spoken and written forms of isiZulu.