| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had seen a | 162 |
|
| 2 | have seen a | 130 |
|
| 3 | has seen a | 116 |
|
| 4 | 've seen a | 77 |
|
| 5 | 'd seen a | 42 |
|
| 6 | have seen a | 41 |
|
| 7 | to have seen a | 21 |
|
| 8 | having seen a | 19 |
|
