| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they are [verb] at [num] | 7 |
|
| 2 | they [am/are] [v-ing] at [num] | 6 |
|
| 3 | they [am/are] [vb pp] at [num] | 6 |
|
| 4 | they 're [verb] at [num] | 5 |
|
