| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [vb pp] [prep] a [noun] | 997 |
|
| 2 | [verb] been [vb pp] [prep] a series | 39 |
|
| 3 | have been [vb pp] [prep] a series | 39 |
|
| 4 | has been [verb] [prep] a series | 22 |
|
| 5 | has been [vb pp] [prep] a series | 19 |
|
| 6 | has been [vb pp] [prep] [art] series | 19 |
|
| 7 | has [be] [vb pp] [prep] a series | 19 |
|
| 8 | has been [vb pp] [prep] [art] series | 19 |
|
| 9 | has [been] [vb pp] [prep] a series | 19 |
|
| 10 | has be [vb pp] [prep] a series | 19 |
|
| 11 | has been [vb pp] [prep] a series | 19 |
|
| 12 | [vb -s] been [vb pp] [prep] a series | 19 |
|
