| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] had been [v-ing] for | 265 |
|
| 2 | it had been [verb] for | 65 |
|
| 3 | it [verb] been [v-ing] for | 50 |
|
| 4 | it have been [v-ing] for | 50 |
|
| 5 | it had been [v-ing] [prep] | 41 |
|
| 6 | it had been [v-ing] [prep] | 41 |
|
| 7 | it had been [v-ing] for | 17 |
|
| 8 | it had [been] [v-ing] for | 17 |
|
| 9 | it [vb past] been [v-ing] for | 17 |
|
| 10 | it had be [v-ing] for | 17 |
|
| 11 | it had [be] [v-ing] for | 17 |
|
