| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [prep] | 6057 |
|
| 2 | [vb base] been [v-ing] [prep] | 1992 |
|
| 3 | [vb base] have been [prep] | 40 |
|
| 4 | [vb base] have been [v-ing] | 35 |
|
