pak

1. however; on the other hand; whereas
   Ja volim more, moj muž pak planine. — I love the sea, whereas my husband loves the mountains.
   S druge pak strane, možda je u pravu. — On the other hand, he may be right.
2. (in ako pak) if, however
   Ako pak ne stigneš, javi mi. — If, however, you don't make it, let me know.

3. (in hockey) puck
   Golman je uhvatio pak u poslednjoj sekundi. — The goalie caught the puck in the last second.

"Pak" usually comes after the first word or phrase, not at the start of the sentence.