| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] sitting at | 13 |
|
| 2 | have been sitting at | 13 |
|
| 3 | have [be] sitting at | 13 |
|
| 4 | have be sitting at | 13 |
|
| 5 | had [be] sitting at | 10 |
|
