| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had be [verb] by | 3936 |
|
| 2 | had be [vb pp] by | 3918 |
|
| 3 | [verb] be produced by | 98 |
|
| 4 | have be produced by | 96 |
|
| 5 | had be produced [prep] | 38 |
|
| 6 | [vb past] be produced by | 21 |
|
| 7 | had be produce by | 20 |
|
| 8 | had [be] produced by | 20 |
|
