| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [verb] at | 171 |
|
| 2 | [been] [verb] at a | 171 |
|
| 3 | have [been] [verb] a | 145 |
|
| 4 | have [verb] at a | 61 |
|
| 5 | have [been] at a | 8 |
|
