| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] be presented [prep] a | 8 |
|
| 2 | [vb past] been presented [prep] a | 8 |
|
| 3 | had be presented [prep] a | 7 |
|
| 4 | [vb past] be presented [prep] an | 6 |
|
