| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | exist [prep] the time of | 18 |
|
| 2 | exist [prep] the time of | 18 |
|
| 3 | exist at the time of | 17 |
|
| 4 | existed [prep] the time of | 6 |
|
| 5 | existing [prep] the time of | 5 |
|
