| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [vb -s] been [v-ing] on | 43 |
|
| 2 | [noun sg] has been [v-ing] on | 34 |
|
| 3 | [noun sg] [vb -s] been going on | 34 |
|
| 4 | [noun sg] 's been [v-ing] on | 9 |
|
| 5 | work [vb -s] been [v-ing] on | 6 |
|
