| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [vb pp] for [noun] | 237 |
|
| 2 | [verb] [been] [vb pp] for century | 32 |
|
| 3 | have [been] [vb pp] for century | 32 |
|
| 4 | have [been] [verb] for century | 10 |
|
| 5 | have [been] [vb pp] [prep] century | 9 |
|
| 6 | have [been] [vb pp] [prep] century | 9 |
|
| 7 | have [been] [vb pp] for century | 8 |
|
| 8 | have [be] [vb pp] for century | 8 |
|
| 9 | [vb base] [been] [vb pp] for century | 8 |
|
