| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] has been [v-ing] | 1961 |
|
| 2 | [noun] has been [prep] | 1096 |
|
| 3 | has been [v-ing] [prep] | 1064 |
|
| 4 | [noun] been [v-ing] [prep] | 49 |
|
