| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | we have [vb pp] that a | 31 |
|
| 2 | we have [vb pp] [that] a | 31 |
|
| 3 | we have [vb pp] that a | 31 |
|
| 4 | we have seen [conj] a | 11 |
|
| 5 | we have shown [conj] a | 6 |
|
