| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it has been [vb pp] [prep] [det] | 91 |
|
| 2 | it has been [vb pp] [prep] some | 33 |
|
| 3 | it has been [vb pp] by [det] | 23 |
|
| 4 | it has been [vb pp] for [det] | 22 |
|
| 5 | it has been [vb pp] [prep] many | 16 |
|
| 6 | it has been [vb pp] in [det] | 13 |
|
| 7 | it has been known [prep] [det] | 12 |
|
| 8 | it has been [vb pp] [prep] that | 8 |
|
| 9 | it has been [vb pp] [prep] several | 8 |
|
| 10 | it has been used [prep] [det] | 8 |
|
| 11 | it has been suggested [prep] [det] | 7 |
|
| 12 | it has been [vb pp] on [det] | 6 |
|
| 13 | it has been [vb pp] [prep] this | 6 |
|
| 14 | it has been [vb pp] from [det] | 6 |
|
| 15 | it has been [vb pp] [prep] both | 6 |
|
| 16 | it has been argued [prep] [det] | 5 |
|
| 17 | it has been [vb pp] [prep] all | 5 |
|
| 18 | it has been [vb pp] at [det] | 5 |
|
| 19 | it has been [vb pp] above [det] | 5 |
|
