| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [prep] [noun] | 1324 |
|
| 2 | it have been [prep] [noun] | 135 |
|
| 3 | it have been [v-ing] [prep] | 131 |
|
| 4 | it have been [v-ing] [noun] | 16 |
|
