pudełka

In a sentence

• Na stole znajdują się trzy pudełka.

  On the table, there are three boxes.

  Here, 'pudełka' is used in the nominative plural form, denoting that three boxes are located on the table.

• Potrzebuję tych pudełek, aby zapakować prezenty.

  I need these boxes to wrap gifts.

  In this sentence, 'pudełek' is the genitive plural form, indicating the possession or quantity required for wrapping gifts.

• Otworzyłam jedno z pudełek i znalazłam tam stare zdjęcia.

  I opened one of the boxes and found old photos inside.

  Here, 'pudełek' also appears in the genitive plural form, implying ownership or partitive context—one among the boxes.