| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | after it has be [vb pp] | 55 |
|
| 2 | after it has been [vb pp] | 55 |
|
| 3 | after it has [be] [vb pp] | 55 |
|
| 4 | after it has [been] [vb pp] | 55 |
|
