| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] been [v-ing] for [det] time | 17 |
|
| 2 | [vb base] [been] [v-ing] for some time | 17 |
|
| 3 | have [been] [v-ing] for [det] time | 14 |
|
