| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] [prep] [vb infin] | 6415 |
|
| 2 | be [v-ing] [prep] [vb infin] | 6415 |
|
| 3 | [is] [v-ing] [prep] [vb infin] | 1503 |
|
| 4 | is [v-ing] [prep] [verb] | 305 |
|
| 5 | is [verb] [prep] [vb infin] | 155 |
|
