| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [prep] [v-ing] at [det] | 28 |
|
| 2 | [be] worth [v-ing] at [det] | 23 |
|
| 3 | [is] [prep] [v-ing] at [det] | 17 |
|
| 4 | is [prep] [v-ing] at [det] | 16 |
|
| 5 | [be] [prep] [v-ing] at this | 13 |
|
| 6 | [be] [prep] [v-ing] at all | 5 |
|
| 7 | [be] [prep] looking at [det] | 5 |
|
| 8 | [be] [prep] noting at [det] | 5 |
|
