| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] [prep] [vb infin] | 6415 |
|
| 2 | be [pers pn] [v-ing] [prep] | 3244 |
|
| 3 | [pers pn] [v-ing] [prep] [vb infin] | 1177 |
|
