| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [modal v] [be] [verb] [prep] [art] | 837 |
|
| 2 | they [modal v] [be] [verb] [prep] [art] | 837 |
|
| 3 | [pron] [modal v] [be] [verb] at [art] | 316 |
|
| 4 | they [modal v] [be] [verb] at [art] | 40 |
|
