The correct spelling of the phrase "laying grave" is actually "laying a grave." The IPA phonetic transcription for this phrase is /ˈleɪɪŋ ə ɡreɪv/. The "a" in "laying" is pronounced as a schwa sound /ə/. The "a" in "grave" is pronounced as a long "a" sound /eɪ/. The addition of the article "a" in this phrase is important for proper grammar as it signifies that someone is laying a specific grave, not just any grave.