Merkha kefula

Mercha kefula (מֵרְכָא כּפוּלָ֦ה, with variant English spellings) is a rare cantillation mark that occurs 5 times in the Torah (once in Genesis, once in Exodus, once in Leviticus, and twice in Numbers) and once in the Haftarah (for Behaalotecha and for the intermediate Shabbat for Chanukah, in the Book of Zechariah.)

The Hebrew words מֵרְכָא כּפוּלָ֦ה translate into English as double mercha. This name is given since the mark that is used appears like two merchas.

The Mercha kefula appears in the following locations in the Torah:

It also occurs in the Haftarah at Zechariah 3:2, read on the intermediate Shabbat for Chanukah and for Parashat Behaalotecha.

In the Leningrad Codex, it occurs in these places: Gen 27:25, Ex 5:15, Lev 10:1, Numb 32:42, 14:3, 1 Kings 10:3, 20:29, Ezek 14:4, Hab 1:3, Zech 3:2, Ezra 7:25, Neh 3:38, 2 Chr 9:2, 20:30.

...
Wikipedia