| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun sg] [prep] | 163382 |
|
| 2 | seen [prep] a [noun sg] | 1320 |
|
| 3 | seen a [noun sg] [prep] | 349 |
|
| 4 | seen [prep] [noun sg] [prep] | 314 |
|
