Usages of per
Quan l'ascensor arriba tard, pugem per l'escala.
When the elevator arrives late, we go up by the stairs.
Vaig a la farmàcia per comprar un medicament.
I am going to the pharmacy to buy medicine.
No cal que corris; podem trigar menys si anem pel pont.
You do not need to run; we can take less time if we go by the bridge.
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