| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [prep] [verb] | 2653 |
|
| 2 | is [prep] [v-ing] | 2583 |
|
| 3 | be [prep] trying | 138 |
|
| 4 | [be] [prep] trying | 138 |
|
| 5 | [is] [prep] trying | 71 |
|
| 6 | is [prep] try | 48 |
|
| 7 | is [prep] trying | 48 |
|
