| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it has been [verb] for | 113 |
|
| 2 | it has [been] [vb pp] for | 100 |
|
| 3 | it has [been] know for | 29 |
|
| 4 | it has [been] known for | 29 |
|
| 5 | it has [been] [v-ing] for | 13 |
|
| 6 | it has [been] use for | 6 |
|
| 7 | it has [been] used for | 6 |
|
