| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] on for | 121 |
|
| 2 | have [been] [verb] on for | 121 |
|
| 3 | have [been] [v-ing] on for | 109 |
|
| 4 | have [been] go on for | 91 |
|
| 5 | have [been] going on for | 90 |
|
| 6 | has [been] [verb] on for | 44 |
|
| 7 | had [been] [verb] on for | 32 |
|
| 8 | 's [been] [verb] on for | 18 |
|
| 9 | have [been] [verb] on for | 15 |
|
| 10 | have [been] [vb pp] on for | 12 |
|
| 11 | have [been] working on for | 10 |
|
| 12 | have [been] work on for | 10 |
|
| 13 | 've [been] [verb] on for | 7 |
|
