| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | this has been the [noun] | 73 |
|
| 2 | this [vb -s] been the [noun sg] | 70 |
|
| 3 | this [vb -s] been the case | 16 |
|
| 4 | this [vb -s] been the case | 16 |
|
| 5 | this [vb -s] been the subject | 5 |
|
| 6 | this [vb -s] been the subject | 5 |
|
