| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [am/are] [verb] a | 498 |
|
| 2 | they [am/are] [verb] at | 269 |
|
| 3 | [am/are] [verb] at a | 231 |
|
| 4 | they [verb] at a | 110 |
|
| 5 | they [am/are] at a | 16 |
|
