dziewczynki

In a sentence

• Dziewczynki bawią się w parku.

  The girls are playing in the park.

  Here 'dziewczynki' is the subject, plural diminutive form of 'dziewczyna', referring to young girls engaged in an activity.

• Widzę dziewczynki na placu zabaw.

  I see the girls at the playground.

  In this sentence, 'dziewczynki' is the direct object in its accusative form, referring to the girls being observed.

• W klasie są dwie dziewczynki.

  There are two girls in the class.

  Here 'dziewczynki' is the complement, used in the nominative case to describe the presence of girls in a location.