Just for your information, SibSongPannNa (TaiYai), Lanna, Burmese letters looks very similar.
You can send me some pictures. Just mail to s_issara at yahoo dot com (sorry to write this way, I just don't like those webbot
)
I can ask people in Thaiblades (some people can read Lanna) and also my Burmese teacher (I just start studying Burmese
)