| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [v-ing] [prep] [noun] | 1487 |
|
| 2 | has [been] [v-ing] [prep] | 1064 |
|
| 3 | has [been] [prep] [noun] | 716 |
|
| 4 | has [been] [v-ing] [noun] | 429 |
|
