| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [v-ing] [pron] [verb] | 411 |
|
| 2 | [be] [v-ing] [pron] [vb infin] | 177 |
|
| 3 | [is] [verb] [pron] [vb infin] | 164 |
|
