After some search, I think that the explanation could contain a table like this Table: German possessive pronouns in the nominative case

Nominative - possessive refering to masculine/neuter - possessive refering to feminine Ich - mein - meine du - dein - deine er - sein - seine sie - ihr - ihre es - sein - seine wir - unser - unsere ihr - euer - eure Sie - ihr - ihre

Possessive pronouns follow the pattern of the definite article (der, die, das...) for their endings. So they always have some ending.

Possessive adjectives follow the pattern of ein/kein.

German possessive pronouns and not only -e, but other endings, too. It all depends on the gender, case and number of the word that the subject possesses.

But in short, pronouns get -e before feminine nouns and nouns in plural.

For example: mein Bruder (masculine) - my brother mein Handy (neuter) - my cell phone

meine Schwester (feminine) - my sister meine Uhr (feminine) - my clock

meine Eltern ( plural) - my parents meine Sache (plural) - my stuff

Of course, all of these words get different endings in different cases - this only applies to feminine and plural nouns in Nominative and Accusative.

It's worth noting that there are possessive pronouns and possessive adjectives, or as this post calls them, dependent and independent possessive pronouns; which are two separate particles that decline differently.

• Possessive adjectives/dependent possessive pronouns decline like the indefinite article - ein

• (Independent) possessive pronouns decline like the definite article - der, die, das