Three-syllable rendering of a foreign "Ya-ga-ha" or "Ya-ka-ha" sound — could fit Arabic, Turkic, or Pacific-island names.
雅 (yǎ, "elegant") is one of the most chosen first characters for foreign names because it both sounds like "ya" and reads positively (compare
雅典 "Athens,"
雅虎 "Yahoo!").
格 covers "ga/ge" and
哈 covers a final aspirated "ha."