| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [v-ing] for | 1564 |
|
| 2 | have [been] [v-ing] a | 781 |
|
| 3 | [been] [v-ing] for a | 205 |
|
| 4 | have [been] for a | 60 |
|
