Learn Turkish: Hacmin izin verdiği kadar palet istifledik. - We stacked as many pallets as the volume allowed.

This is the core structure of the lesson. We take the verb izin vermek (to allow) and add the participle -dik plus the 3rd person possessive -i, giving us verdiği (its allowing). When combined with kadar (as much as), it literally means 'as much as its allowing' or 'as much as it allowed'.

Why is 'volume' written as hacmin instead of just hacim?

In this type of adverbial clause, the subject of the action (the thing doing the allowing) must take the genitive case. Since 'the volume' is the subject of the verb izin vermek, we add the genitive suffix -in to hacim.

Wait, shouldn't adding -in to hacim make it hacimin?

You might expect that, but hacim is one of several Turkish words (mostly loanwords or body parts) that drop their second vowel when a suffix starting with a vowel is added. So, hacim plus -in becomes hacmin. You've likely seen this before with words like isim (ismin) or şehir (şehrin).

The English translation says 'pallets', so why isn't it paletler?