Two different subjective pronouns:
~ they
~ their
Two objective pronouns functioning as a direct object:
~ it
~ their
One objective pronoun functioning as an object of the preposition:
~ them
Two possesive pronouns:
~ their
~ ?
One intensive pronoun:
~ itself
I couldn't come up with another possesive pronoun in your reading other than their. I hope somebody else can help you find one!