| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] [prep] | 79523 |
|
| 2 | 've be [v-ing] | 3051 |
|
| 3 | 've be [prep] | 1049 |
|
| 4 | 've [v-ing] [prep] | 6 |
|
