| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been in [noun] for some | 24 |
|
| 2 | have been in [noun sg] for some | 22 |
|
| 3 | have been in operation for [adj] | 16 |
|
| 4 | have been [prep] operation for some | 5 |
|
| 5 | have been in operation for some | 5 |
|
| 6 | have been in operation [prep] some | 5 |
|
| 7 | have [been] in operation for some | 5 |
|
| 8 | have [be] in operation for some | 5 |
|
| 9 | have be in operation for some | 5 |
|
| 10 | [verb] been in operation for some | 5 |
|
