+---+     +---------+     +---+
| C | <-- |  Wide   | --> | B |
+---+     +---------+     +---+
             +------+
             |  E   |
             +------+
               ^
               |
               |
             +------+
             | High |
             +------+
               |
               |
               v
             +------+
             |  D   |
             +------+
