SINGULAR (stressed, unstressed):
1st person: mijn, (m’n) – my
2nd person: jouw, je – your
2nd p. formal: uw – your
3rd person:  zijn, (z’n) – his/its
3rd person:  haar, (d’r) – her

PLURAL (stressed, unstressed):
1st person: ons/onze – our
2nd person: jullie, je – your
2nd p. formal: uw – your
3rd person:  hun, (d’r) – their

Ons is used before  neuter singular nouns:
Dat is ons huis.

Onze is used before plural neuter nouns and common nouns:
Dit zijn onze boeken.
Dit is onze poes.
Dit zijn onze poezen.