| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [v-ing] [prep] [det] | 583 |
|
| 2 | [is] [v-ing] [prep] [det] | 580 |
|
| 3 | [be] [v-ing] at [det] | 392 |
|
| 4 | [is] [verb] at [det] | 244 |
|
| 5 | [is] [v-ing] at [adj] | 124 |
|
| 6 | [is] [v-ing] at [det] | 45 |
|
