| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [art] time there [was/were] | 29 |
|
| 2 | at the time there [was/were] | 29 |
|
| 3 | at [art] time there was | 16 |
|
| 4 | at [art] time there were | 13 |
|
