| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] at the time [prep] | 33 |
|
| 2 | [been] [verb] at the time [prep] | 33 |
|
| 3 | [been] [vb pp] at the time [prep] | 32 |
|
| 4 | [been] [verb] at the time of | 25 |
|
| 5 | [been] [verb] at the time of | 25 |
|
