insert_committed [0] v100 k1 
delete_committed [200] v100 
insert_committed [200] v200 k1 
commit_any [200] v100 
commit_any [200] v200 
delete_committed [300] v200 
insert_committed [300] v300 k1 
commit_any [300] v200 
commit_any [300] v300 
