| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] for a | 487 |
|
| 2 | [prep] [v-ing] for [det] | 256 |
|
| 3 | [prep] [v-ing] a [det] | 228 |
|
| 4 | [v-ing] for a [det] | 79 |
|
| 5 | [prep] for a [det] | 6 |
|
