| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been going on for [adj] | 34 |
|
| 2 | been [v-ing] on for [det] | 26 |
|
| 3 | been [v-ing] on for some | 18 |
|
| 4 | been [v-ing] on for some | 18 |
|
| 5 | been [v-ing] on for [num] | 16 |
|
