| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [vb -s] been going on [prep] | 23 |
|
| 2 | [noun sg] has been going on [prep] | 22 |
|
| 3 | [noun sg] [vb -s] been going on for | 10 |
|
| 4 | work [vb -s] been going on [prep] | 5 |
|
