| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [vb pp] to be [adj] [prep] | 120 |
|
| 2 | [been] [vb pp] to be [adj] [prep] | 120 |
|
| 3 | [been] shown to be [adj] [prep] | 56 |
|
| 4 | [been] [vb pp] to be [adj] in | 41 |
|
| 5 | [been] found to be [adj] [prep] | 24 |
|
| 6 | [been] [vb pp] to be [adj] to | 22 |
|
| 7 | [been] [vb pp] to be [adj] of | 18 |
|
| 8 | [been] [vb pp] to be [adj] for | 15 |
|
| 9 | [been] [vb pp] to be effective [prep] | 12 |
|
| 10 | [been] [vb pp] to be present [prep] | 8 |
|
| 11 | [been] reported to be [adj] [prep] | 6 |
|
| 12 | [been] [vb pp] to be important [prep] | 6 |
|
