| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been [v-ing] on for | 109 |
|
| 2 | have [been] [v-ing] on for | 109 |
|
| 3 | [verb] [been] going on for | 90 |
|
| 4 | [vb -s] [been] [v-ing] on for | 58 |
|
| 5 | has [been] [v-ing] on for | 41 |
|
| 6 | [vb past] [been] [v-ing] on for | 28 |
|
| 7 | had [been] [v-ing] on for | 27 |
|
| 8 | [vb base] [been] [v-ing] on for | 19 |
|
| 9 | 's [been] [v-ing] on for | 17 |
|
| 10 | have [been] [v-ing] on for | 12 |
|
| 11 | [verb] [been] working on for | 10 |
|
| 12 | 've [been] [v-ing] on for | 7 |
|
