| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | happening [prep] [art] [noun] | 391 |
|
| 2 | [verb] [prep] [art] economy | 184 |
|
| 3 | [v-ing] [prep] [art] economy | 42 |
|
| 4 | happen [prep] [art] economy | 14 |
|
| 5 | happening [prep] [art] economy | 8 |
|
| 6 | happening [prep] [art] economy | 8 |
|
