| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [am/are] [verb] [to-vb] a [noun] | 851 |
|
| 2 | [verb] [to-vb] at a [noun] | 132 |
|
| 3 | [am/are] [verb] at a [noun] | 112 |
|
| 4 | [am/are] [verb] [to-vb] at [noun] | 38 |
|
| 5 | [am/are] [verb] [to-vb] at a | 11 |
|
