| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a group of [noun pl] at | 34 |
|
| 2 | a group [prep] [noun pl] at | 34 |
|
| 3 | a group of [noun pl] at | 34 |
|
| 4 | a group [prep] [noun pl] at | 34 |
|
