| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been going on for [det] | 18 |
|
| 2 | have been going on for [num] | 14 |
|
| 3 | has been going on for [adj] | 13 |
|
| 4 | have been going on for some | 13 |
|
| 5 | have been going on for some | 13 |
|
| 6 | had been going on for [adj] | 8 |
|
| 7 | have been going on for [adj] | 6 |
|
