This is the 13394th most frequent Turkish word.
kolilerine
"To their boxes."
Here, 'kolilerine' refers to 'their boxes', with the dative case in Turkish implying motion towards or attention towards the boxes.
Kolilerine dikkat ederek taşımaları gerektiğini söyledi.
He/she said that they should carry them while paying attention to the boxes.
In this sentence, 'kolilerine' means 'into their boxes', again showing the dative case form.
Eşyaları düzenli bir şekilde kolilerine koydu.
He/she placed the items neatly into their boxes.
Here, the term 'kolilerine' is utilized in the affected dative case, indicating the aim to avoid harm towards the boxes.