| December 2019 |
| 25/12/19 | The alliance CE.RO was founded. |
| Founding members::  Eucueu, NEL, CLAU and frc. |
|  The alliance reaches a population more than 100. |
|
| 28/12/19 | Deletion of:CLAU. |
| January 2020 |
|
| 01/01/20 | Deletion of:NEL. |
|
| 02/01/20 | Deletion of:Eucueu. |
|
| 04/01/20 | Joining of:svrfrc and Nel. |
| Deletion of:frc. |
|
| 06/01/20 | Joining of:clau and Sir. |
|
| 13/01/20 | Deletion of:Nel. |
|
| 21/01/20 | Deletion of:svrfrc. |
|
| 24/01/20 | Deletion of:clau. |
|
| 25/01/20 | Joining of:Grof. |
|
| 26/01/20 | Joining of:Bologu. |
| February 2020 |
|
| 01/02/20 | Deletion of:Sir. |
|
| 08/02/20 | Deletion of:Grof. |