| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [been] [v-ing] [prep] [noun] | 262 |
|
| 2 | [Wh det] has [been] [v-ing] [prep] | 81 |
|
| 3 | [Wh det] has [been] [prep] [noun] | 42 |
|
| 4 | [Wh det] has [been] [v-ing] [noun] | 20 |
|
