| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] on for | 121 |
|
| 2 | have been [v-ing] on for | 109 |
|
| 3 | have been working [adv] for | 24 |
|
| 4 | have been working on [prep] | 19 |
|
| 5 | have been work on for | 10 |
|
| 6 | have [be] working on for | 10 |
|
| 7 | [verb] been working on for | 10 |
|
| 8 | have be working on for | 10 |
|
| 9 | have [been] working on for | 10 |
|
| 10 | have been working [adv prt] for | 10 |
|
| 11 | have been working on for | 10 |
|
