| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] on [det] | 1745 |
|
| 2 | be [v-ing] on [det] | 357 |
|
| 3 | be working [prep] [det] | 185 |
|
| 4 | be working on [adj] | 159 |
|
| 5 | be work on [det] | 93 |
|
| 6 | [be] working on [det] | 89 |
|
