1. Grandmother's mother:
* Nyina wa nyina wa (followed by the person's name) - This literally means "mother of the mother of..."
* Nyina wa nyina wa (followed by the person's name) wa/wa (gender marker) - This is a more formal version that adds a gender marker ("wa" for male, "wa" for female).
2. Great-grandmother on the father's side:
* Nyina wa nyina wa (followed by the person's name) wa/wa (gender marker) - This is the same as the previous example, but it specifically refers to the grandmother on the father's side.
Example:
To say "My great grandmother is called Wanjiku", you would say:
* Nyina wa nyina wa Wanjiku (for a female great-grandmother)
* Nyina wa nyina wa Wanjiku wa (for a male great-grandmother)
Remember that the specific wording might slightly differ depending on the region and dialect.