| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they have be [v-ing] on | 24 |
|
| 2 | they have been [v-ing] on | 24 |
|
| 3 | they have [been] [v-ing] on | 24 |
|
| 4 | they have [be] [v-ing] on | 23 |
|
| 5 | they had [be] [v-ing] on | 10 |
|
| 6 | they have [be] working on | 9 |
|
| 7 | they 've [be] [v-ing] on | 9 |
|
| 8 | they have [be] [v-ing] on | 5 |
|
