date	node-0	node-1
date	node-0	node-2
date	node-1	node-0
date	node-1	node-2
date	node-2	node-0
date	node-2	node-1
date	node-0	node-1
date	node-0	node-2
date	node-0	node-3
date	node-1	node-0
date	node-1	node-2
date	node-1	node-3
date	node-2	node-0
date	node-2	node-1
date	node-2	node-3
date	node-3	node-0
date	node-3	node-1
date	node-3	node-2