| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | are [v-ing] [prep] | 8393 |
|
| 2 | they are [v-ing] | 4058 |
|
| 3 | they are [prep] | 2423 |
|
| 4 | they [v-ing] [prep] | 731 |
|
