| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun sg] [prep] | 143654 |
|
| 2 | down [prep] a [noun sg] | 1474 |
|
| 3 | down [prep] [noun sg] [prep] | 609 |
|
| 4 | down a [noun sg] [prep] | 397 |
|
