| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] [prep] [verb] | 7777 |
|
| 2 | [be] [v-ing] [prep] [vb infin] | 6415 |
|
| 3 | [be] [v-ing] [prep] start | 71 |
|
| 4 | [be] [verb] [prep] start | 61 |
|
