ABOZ blood type

So about last two weeks I went back to kampung.

There were tok , tok wan , makchaq, pakngah, makngah , and paksu there.

When we were having lunch, makchaq somehow told that she is hypertensive for quite sometime but none of us knew about that.

Then tokwan suddenly started asking what type of blood that we are having.

All of us tell ours.Among us there were A, B, and O blood type. 

Then I ask what type of blood group that tokwan has but he did not sure.

So makngah said 'tokwan punya darah type Z'.