| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | this be [verb] at a | 17 |
|
| 2 | this be [vb pp] at a | 11 |
|
| 3 | this is [verb] at a | 9 |
|
| 4 | this was [verb] at a | 7 |
|
| 5 | this be [v-ing] at a | 5 |
|
