_ AIRCOL ____________+
|
_ GUERTENIR _________|
| |
| |_____________________
|
_ CINCAR ____________|
| |
| | _____________________
| | |
| |_____________________|
| |
| |_____________________
|
|
|-- PETR
|
| _____________________
| |
| _____________________|
| | |
| | |_____________________
| |
|_____________________|
|
| _____________________
| |
|_____________________|
|
|_____________________