| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there have been times when | 22 |
|
| 2 | there have been times when | 22 |
|
| 3 | [ex0] have been times when | 22 |
|
| 4 | [pron] have been times when | 13 |
|
| 5 | [pron] had been times when | 9 |
|
