| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to have been [verb] by | 515 |
|
| 2 | to have been [vb pp] by | 515 |
|
| 3 | [verb] been invented by | 13 |
|
| 4 | have been invented by | 13 |
|
| 5 | to have been invented [prep] | 7 |
|
| 6 | to have [been] invented by | 6 |
|
| 7 | to have [be] invented by | 6 |
|
| 8 | [to-vb] been invented by | 6 |
|
| 9 | to have be invented by | 6 |
|
| 10 | to have been invent by | 6 |
|
