| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have been [v-ing] [prep] | 279 |
|
| 2 | [vb mod] have been [prep] [pron] | 152 |
|
| 3 | [vb mod] have been [v-ing] [pron] | 113 |
|
| 4 | have been [v-ing] [prep] [pron] | 73 |
|
