| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] has been [v-ing] [prep] | 557 |
|
| 2 | has been [v-ing] [prep] this | 19 |
|
| 3 | [noun] has been [prep] this | 14 |
|
| 4 | [noun] has been [v-ing] this | 10 |
|
