Thanks for this information and link, TonyS. My ancestral background includes not only Pontic Greek, but Laz. Lazuri is a related Caucasian language and the "native " language of my paternal grandfather.
FWIW, not all Laz converted to Islam, internet sources to the contrary. In fact most of my "pontic" relatives in Greece today are Laz. Apparently when the infamous "population exchange" occurred, the Turks just wanted the Christians out- no matter what their ethnic heritage might have been. Today most Christian Laz are lumped with the Pontic Greeks, but we do know who and what we really are!