| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [verb] for many | 35 |
|
| 2 | has been [verb] for many | 35 |
|
| 3 | has been [vb pp] for many | 30 |
|
| 4 | has been use for many | 8 |
|
| 5 | has been used for many | 8 |
|
| 6 | has been know for many | 5 |
|
| 7 | has been known for many | 5 |
|
| 8 | has been [v-ing] for many | 5 |
|
