Darga Tevir: Tevir is found either alone or preceded by Darga or Mercha. Darga occasionally precedes other combinations (e.g. Darga Munach Revia).
Mercha Kefula: Occasionally preceded by Darga, but usually on its own. Occurs only five times in the Torah, and once in Haftarah. Its function appears to be similar to Tevir.