I have a pen,

this is my pen,

That pen is mine,

This is our house,

This house is ours,

You have a bag,

this is your bag,

this bag is yours,

This is his car

,this car is his,

she has a purse,

the purse is hers

,the cow has a tail,

the tail is its,

it is its tail.

They have three houses

,the three houses are theirs.

These are their three houses.