Hi Vsuresh, "I did commit", "I committed", and "...newly dug grave" are correct, but "committing a mistake" is awkward. "Commit an error" is heard more frequently. Most people would say "I made a mistake." "Committed is not incorrect, but "made" is more natural. John
Alongside Clive's explanations, there are many examples with this construction: Freshly brewed coffee. Clinically proven affective. Correctly answered question Wrongly accused.