In the o category, i say my with the word tōku
Now, body parts are in i category, so if I want to say my tummy is sore, I would say
Kei te mamae tōku puku.
The word for belonging to you is tōu in the o category
So
Ka haere atu rātou ki tōu whare
They will go to your house
The word for his or her is tōna
And parents are in the o category so...
Kua mate tōna pāpā
His father has died
In the dual, talking about two people
Belonging to you and me in the o category is tō tāua
He pakaru tō tāua waka
Our car is broken
And is tō because transpōrt is in the o category
The two of us, not you is māua
, so belonging to us two but not you is tō māua
He wai tō māua
The two of us have water
If you two have something in the ō category, tō kōrua
I oma tō kōrua māmā ki te hokomaha
Your mother ran to the supermarket.
If those two have something
Tō rāua
He whare hou tō rāua
Those two have a new house
And in the plural
Tō tātou is belonging to all of us
Kei te aroha rātou ki tō tātou whenua
They all love our land
Tā mātou is belonging to us but not you
Ka haere atu mātou ki tō mātou whare
We will go to our house
Tā koutou is belonging to you all but not me
Kua kōrero ahau ki tō koutou māmā
I have spoken to your mother
And lastly
Tŏ rātou is used for things in the o category that belong to them
Kei te mohio au ki tō rātou pāpā
I know their father