| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [vb pp] that [noun sg] | 135 |
|
| 2 | [been] suggested that [noun sg] | 47 |
|
| 3 | [been] shown that [noun sg] | 17 |
|
| 4 | [been] argued that [noun sg] | 17 |
|
| 5 | [been] found that [noun sg] | 8 |
|
| 6 | [been] recognised that [noun sg] | 5 |
|
