| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have [been] [verb] for many | 12 |
|
| 2 | it [verb] been [verb] for many | 12 |
|
| 3 | it has [been] [verb] for many | 10 |
|
| 4 | it [verb] [been] [vb pp] for many | 10 |
|
| 5 | it [vb -s] [been] [verb] for many | 10 |
|
| 6 | it [verb] [been] know for many | 5 |
|
| 7 | it [verb] [been] known for many | 5 |
|
