| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it has been know [prep] [det] | 12 |
|
| 2 | it has [been] known [prep] [det] | 12 |
|
| 3 | it has [been] know for [det] | 12 |
|
| 4 | it has [been] know [prep] [det] | 12 |
|
| 5 | it has [been] know [prep] some | 7 |
|
| 6 | it has [been] know [prep] many | 5 |
|
