devops/perl/lib/Graph-Easy-0.76/t/out/4_collapse.txt

+-----------+  S P A C E   +-----------+
| S P A C E | -----------> | S P A C Y |
+-----------+              +-----------+
+-----------+  A B C D     +-----------+
|   A B C   | -----------> |   X Z Y   |
+-----------+              +-----------+