| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [vb pp] to be [adj] | 235 |
|
| 2 | been [vb pp] to be [adj] | 235 |
|
| 3 | been [vb pp] to [be] [adj] | 235 |
|
| 4 | been shown to [be] [adj] | 96 |
|
| 5 | been found to [be] [adj] | 45 |
|
| 6 | been [vb pp] to [be] effective | 22 |
|
| 7 | been held to [be] [adj] | 10 |
|
| 8 | been designed to [be] [adj] | 9 |
|
| 9 | been [vb pp] to [be] present | 8 |
|
| 10 | been reported to [be] [adj] | 8 |
|
| 11 | been [vb pp] to [be] important | 7 |
|
| 12 | been [vb pp] to [be] useful | 5 |
|
| 13 | been assumed to [be] [adj] | 5 |
|
