insert_committed [0] v10 k1 delete_committed [100] v10 insert_committed [100] v20 k1 commit_any [100] v10 commit_any [100] v20 delete_committed [200] v20 insert_committed [200] v10 k1 commit_any [200] v20 commit_any [200] v10 delete_provisional [300,301] v10 lock [300] v10 insert_provisional [300,301] v30 k1 lock [300] v30 delete_provisional [300,301,302] v30 lock [300] v30