| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [noun sg] for us [to-vb] | 31 |
|
| 2 | a [noun sg] for us [verb] | 17 |
|
| 3 | an [noun sg] for us [verb] | 14 |
|
| 4 | a opportunity for us [verb] | 8 |
|
