| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [pron] | 1971 |
|
| 2 | have been [v-ing] about | 414 |
|
| 3 | been [v-ing] [pron] about | 40 |
|
| 4 | have been [pron] about | 7 |
|
