The picture on the left certainly contains the lines in the middle
and right.
From the corresponding tables we see the two collections of lines generate the whole picture.
Here we label some of the important points of the picture. Note the point
labeled 4(3∞) is in the same location as
3(4∞), yet for this picture it must be the first
because 3 → 4 is allowed while 4 → 3 is not.
On the right top is the graph of this picture. On the right bottom is the graph
with the 3 → 4 and 2 → 1 arrows reversed. Guess how this will
change the picture, then click on the graph for the answer.
