The sound [k] is not aspired. This sound is represented in three different ways:
Before e, i by the letter combination qu (ku u): que, qui
Before a, o, u and at the end of the word by the letter c (ce): ca, co, cu, tic-tac
In the following words by the letter k (ka): kilo, kilómetro, kéfir, kiosko, friki
Learn the word que, which means “what” or “which”.