| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [be] [vb pp] for centuries | 32 |
|
| 2 | have been [vb pp] for century | 32 |
|
| 3 | have [been] [vb pp] for century | 32 |
|
| 4 | have be [vb pp] for century | 32 |
|
| 5 | has [be] [vb pp] for century | 17 |
|
| 6 | have [be] [vb pp] for century | 8 |
|
| 7 | had [be] [vb pp] for century | 6 |
|
