Timing

Greetings everyone.
I bought a Sirion 1.3 _16v.
I did so knowing the timing belt was replaced and didnt want to start after.
My question is. The car swings. I didnt hear knocking and im not sure if the valves are bent.
I opened the tappet cover to find the chain doesn’t match up with the marks.
Would it be possible to have the chain on wrong and not hurt the valves?