| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [vb pp] for [det] [noun sg] | 47 |
|
| 2 | has been [vb pp] for [det] [noun pl] | 43 |
|
| 3 | has been [vb pp] for some [noun] | 37 |
|
| 4 | has been [vb pp] for [det] years | 31 |
|
| 5 | has been [vb pp] for [det] year | 31 |
|
| 6 | has been [vb pp] for many [noun] | 27 |
|
| 7 | has been [vb pp] for [det] time | 26 |
|
| 8 | has been [vb pp] for [det] time | 26 |
|
| 9 | has been known for [det] [noun] | 16 |
|
| 10 | has been used for [det] [noun] | 10 |
|
| 11 | has been [vb pp] for this [noun] | 10 |
|
| 12 | has been recognised for [det] [noun] | 7 |
|
| 13 | has been established for [det] [noun] | 5 |
|
