| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [verb] for [noun pl] | 118 |
|
| 2 | been [verb] for several [noun pl] | 46 |
|
| 3 | has been [verb] several [noun pl] | 27 |
|
| 4 | has been [verb] for several | 11 |
|
