| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] for century [prep] | 9 |
|
| 2 | [verb] been [verb] for century [prep] | 9 |
|
| 3 | [vb -s] been [verb] for century [prep] | 5 |
|
| 4 | been [verb] for century [prep] [art] | 5 |
|
| 5 | been [verb] for century [prep] [art] | 5 |
|
