| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [to-vb] for | 34 |
|
| 2 | have been trying [to-vb] for | 15 |
|
| 3 | had been [v-ing] [to-vb] for | 14 |
|
| 4 | have been [v-ing] [to-vb] for | 10 |
|
| 5 | 've been [v-ing] [to-vb] for | 7 |
|
| 6 | have been [v-ing] to do for | 5 |
|
