| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [am/are] [v-ing] on this | 37 |
|
| 2 | are [v-ing] on this | 17 |
|
| 3 | 're [v-ing] on this | 14 |
|
| 4 | [am/are] working on this | 7 |
|
