| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] placed on | 109 |
|
| 2 | [verb] [been] placed on | 109 |
|
| 3 | [verb] been placed on | 109 |
|
| 4 | [vb -s] [been] placed on | 54 |
|
| 5 | has [been] placed on | 53 |
|
| 6 | [vb past] [been] placed on | 29 |
|
| 7 | had [been] placed on | 29 |
|
| 8 | have [been] placed on | 17 |
|
| 9 | [vb base] [been] placed on | 17 |
|
| 10 | have [been] placed on | 7 |
|
| 11 | [vb infin] [been] placed on | 7 |
|
