Long description
In the old path:
Node 1 is on the left and node 6 on the right. Nodes 2 and 4, one below the other are between node 1 and node 6.
An arc exists between node 1 and node 2 with the numbers 3 and 1 beside the corresponding nodes.
An arc exists between node 2 and node 4 with the numbers 1 and 1 beside the corresponding nodes.
Another arc exists between node 4 and node 6 with the numbers 1 and 1 beside the corresponding nodes.
An instruction to subtract 1 from the numbers 1 beside node 1, node 2, and node 4 is seen.
Another instruction to add 1 to the numbers 3, 1, and 1 beside nodes 2, 4, and 6 is seen.
In the new path:
Node 1 is seen on the left. Nodes 6 and 5, one below the other, are seen on the right. Nodes 2, 4, and 3, one below ...
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