| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] has [been] [v-ing] on for | 16 |
|
| 2 | [noun] [vb -s] [been] [v-ing] on for | 16 |
|
| 3 | [noun] [vb -s] been [v-ing] on for | 16 |
|
| 4 | [noun] [vb -s] [been] going on for | 14 |
|
| 5 | [noun sg] [vb -s] [been] [v-ing] on for | 12 |
|
