Similar to how articles change form by different cases, pronouns and possessives also change form. Lets see how each of them look.

Personal Pronouns

Pronouns are used in place of nouns to avoid repitition. These pronouns in Nominative, Accusative and Dative are shown in the below table. As for Genitive, we have seen that Genitive is used to indicate possession. And possessives do just that. So what’s the difference? Apparently, Genitive could have had been used for other things as well. And even though Possessives and Pronouns in Genitive case mean the same, they are different. Look at this for more info: Genitive vs Possessive

Nominative Dative Accusative Meaning
ich mir mich I, to me, me
du dir dich you, to you, you(Singular, informal address)
Sie Ihnen Sie you, to you, you (Singular, formal address)
er ihm ihn he, to him, him
sie ihr sie she, to her, her
es Ihm es it, to it, it
wir uns uns us, to us, us
ihr euch euch you, to you, you (Plural, informal address)
Sie Ihnen Sie you, to you, you (Plural, formal address)
sie ihnen sie them, to them, them

Possessives

Possessive adjectives show belonging or ownership. There are different possessives for each personal pronoun. Also these possessives change by case as well as gender. First, lets see possessives for all pronouns in Nominative form.

Pronoun Nominative form Meaning
ich mein mine
du dein yours (Singular informal address)
Sie Ihr yours (Singular formal address)
er sein his
sie ihr her
es sein its
wir unser ours
ihr euer yours (Plural informal address)
Sie Ihr yours (Plural formal address)
sie ihr theirs

Possessive ‘mein’ forms in different cases

Gender Nominative Genitive Dative Accusative
Masculine mein meines meinem meinen
Feminine meine meiner meiner meine
Neuter mein meines meinem mein
Plural meine meiner meienen meine