| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [been] [v-ing] [prep] [noun] | 262 |
|
| 2 | [conj] has [been] [v-ing] [prep] | 52 |
|
| 3 | [conj] has [been] [prep] [noun] | 40 |
|
| 4 | [conj] has [been] [v-ing] [noun] | 21 |
|
