| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [v-ing] [prep] | 6841 |
|
| 2 | 've [been] [v-ing] | 3051 |
|
| 3 | 've [been] [prep] | 1049 |
|
| 4 | 've [v-ing] [prep] | 6 |
|
