| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been develop over | 16 |
|
| 2 | [verb] been developed over | 16 |
|
| 3 | [vb base] been develop over | 8 |
|
| 4 | have been develop over | 8 |
|
| 5 | [vb -s] been develop over | 7 |
|
| 6 | has been develop over | 6 |
|
