The meeting has already commenced.
I therefore commenced with the hardcore bondage.
The boys then commenced to launch the boat.
Yes, "A search is commenced" is a complete sentence that can stand on its own. It contains a subject ("search") and a verb ("commenced"), making it a sentence that conveys a clear action.
and the battle commenced <><
Because your arrival was delayed, the meeting commenced without you.
He commenced with his speech, optimistically.
Complete
Commenced - verdict is read for the crime concluded - verdict is entered into record and begin serving the sentence.
The hyenas commenced their savage attack.
give me a sentence of sedimentary
can you give me as sentence for channel
give me a sentence with quietus in it