| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] [prep] | 79530 |
|
| 2 | be [v-ing] [prep] | 79523 |
|
| 3 | are [verb] [prep] | 51201 |
|
| 4 | [am/are] [v-ing] [prep] | 22320 |
|
