| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have [adv] been for | 183 |
|
| 2 | have [adv] been [v-ing] for | 111 |
|
| 3 | it have been [v-ing] for | 50 |
|
| 4 | it have [adv] been [v-ing] | 27 |
|
