| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun sg] | 465207 |
|
| 2 | seen [prep] a | 2479 |
|
| 3 | seen [prep] [noun sg] | 1095 |
|
| 4 | seen a [noun sg] | 743 |
|
