| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] by | 15026 |
|
| 2 | been [vb pp] by | 14990 |
|
| 3 | be covered by | 655 |
|
| 4 | [be] covered by | 655 |
|
| 5 | been covered [prep] | 98 |
|
| 6 | been covered [prep] | 98 |
|
| 7 | been covered by | 37 |
|
| 8 | [been] covered by | 37 |
|
| 9 | been cover by | 37 |
|
