"Parkta dolaşırken param kayboldu."

Translation: While hanging around at the park, I lost my money.

[amrjunior1]

what is kayboldu here? third person past tense?

[Selcen_Ozturk]

it is literally "my money is lost".

[amrjunior1]

thank you. i already passed all the lessons but the topic of past participles was not present at all, oh Gosh...