| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] at [det] | 224 |
|
| 2 | is [to-vb] [prep] [det] | 137 |
|
| 3 | [be] [to-vb] at [det] | 40 |
|
| 4 | be [to-vb] at [det] | 40 |
|
| 5 | is [to-vb] at [adj] | 36 |
|
| 6 | [is] [to-vb] at [det] | 19 |
|
