| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] [prep] [det] | 2779 |
|
| 2 | have been [vb pp] [prep] century | 37 |
|
| 3 | have [vb pp] [prep] [det] century | 13 |
|
| 4 | been [vb pp] [prep] [det] century | 7 |
|
