| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [been] [vb pp] to be [adv] | 52 |
|
| 2 | has be [vb pp] to be [adv] | 52 |
|
| 3 | has been [vb pp] to be [adv] | 52 |
|
| 4 | has [be] shown to be [adv] | 23 |
|
| 5 | has [be] found to be [adv] | 12 |
|
| 6 | has [be] [vb pp] to be as | 6 |
|
| 7 | has [be] [vb pp] to be more | 6 |
|
