| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | are [v-ing] [adv] [prep] | 597 |
|
| 2 | [v-ing] [adv] [prep] an | 206 |
|
| 3 | are [v-ing] [prep] an | 154 |
|
| 4 | are [adv] [prep] an | 36 |
|
