| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] been [v-ing] for a | 58 |
|
| 2 | have be [v-ing] for a | 41 |
|
| 3 | 've be [v-ing] for a | 17 |
|
| 4 | [vb base] be looking for a | 5 |
|
| 5 | [vb base] be working for a | 5 |
|
| 6 | [vb base] be campaigning for a | 5 |
|
| 7 | [vb base] be waiting for a | 5 |
|
