Jerome wrote that by 384CE, some ignorant readers of the LXX assumed the tetragrammaton to be a Greek word, πιπι (pipi), suggesting its pronunciation had been forgotten, but affirming its existence at the end of the 4th century. Professor Robert J. Wilkinson suggests that Jews in mixed communities would not tolerate articulations of the tetragrammaton, and that gentiles would have trouble pronouncing it if it were not "ΙΑΩ" or "Κύριος". Some Jews may have continued to pronounce "YHWH" in one form or another, (e.g., "ιαω" in Greek) until the late of Second Temple Period. According to Pavlos Vasileiadis, "The indications denote that it was 'still being pronounced by some Hellenistic Jews' and also by non-Jews as late as the third century C.E.