| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [am/are] [v-ing] [prep] this | 260 |
|
| 2 | [am/are] [v-ing] [prep] this | 259 |
|
| 3 | [am/are] [v-ing] at [adj] | 208 |
|
| 4 | [be] [v-ing] at this | 94 |
|
| 5 | [am/are] [v-ing] at [det] | 90 |
|
| 6 | [am/are] [verb] at this | 50 |
|
| 7 | [am/are] [v-ing] at this | 28 |
|
| 8 | [am/are] [v-ing] at this | 28 |
|
