| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | established at the time [prep] | 6 |
|
| 2 | establish at the time [prep] | 6 |
|
| 3 | establish at the time [prep] | 6 |
|
| 4 | establish at the time of | 6 |
|
| 5 | establish at the time of | 6 |
|
