| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [been] [v-ing] [prep] | 1995 |
|
| 2 | who [vb base] [been] [v-ing] | 213 |
|
| 3 | who [vb base] [been] [prep] | 142 |
|
| 4 | who [vb base] [v-ing] [prep] | 37 |
|
