| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] have been [v-ing] | 10881 |
|
| 2 | [pron] [modal v] have been | 10365 |
|
| 3 | [modal v] have been [v-ing] | 1003 |
|
| 4 | [pron] [modal v] have [v-ing] | 9 |
|
