| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] been [v-ing] for | 380 |
|
| 2 | it [vb -s] been [v-ing] | 283 |
|
| 3 | it [vb -s] been for | 42 |
|
| 4 | it [vb -s] [v-ing] for | 6 |
|
