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