| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | exist at the time | 36 |
|
| 2 | existed [prep] the time | 13 |
|
| 3 | existing [prep] the time | 11 |
|
| 4 | exist [prep] the time | 5 |
|
| 5 | exist [prep] the time | 5 |
|
