| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [vb pp] [prep] be [adj] | 105 |
|
| 2 | has [been] [vb pp] to be [adj] | 105 |
|
| 3 | has [been] [vb pp] [prep] be [adj] | 105 |
|
| 4 | has [been] [vb pp] to be [adj] | 105 |
|
| 5 | has [been] [vb pp] [prep] be [adj] | 88 |
|
| 6 | has [been] shown [prep] be [adj] | 40 |
|
| 7 | has [been] found [prep] be [adj] | 22 |
|
| 8 | has [been] [vb pp] [prep] be effective | 13 |
|
| 9 | has [been] [vb pp] [prep] be effective | 13 |
|
| 10 | has [been] [vb pp] [prep] be [adj -er] | 8 |
|
| 11 | has [been] held [prep] be [adj] | 7 |
|
| 12 | has [been] [vb pp] [prep] be [num] | 6 |
|
| 13 | has [been] reported [prep] be [adj] | 6 |
|
| 14 | has [been] designed [prep] be [adj] | 5 |
|
