How do you use the word prostration in a complex sentence?

1...They reached the throne of their king, and prostrated themselves in awe and fear.

2...Percy was lying prostrate, his arms outstretched and his eyes closed.

3...Immediately after my father's death, my stepmother was prostrate.....

4...I was prostrate with grief....

5...his country's prostrate economy.....

i dont know if this will help but i had the same question and this is all i found. some!