| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] for [adv] | 286 |
|
| 2 | have been operate [prep] [adv] | 7 |
|
| 3 | have been operate [prep] [adv] | 7 |
|
| 4 | have been operate for [adv] | 6 |
|
| 5 | have be operate for [adv] | 6 |
|
| 6 | have been operate for [adv] | 6 |
|
| 7 | [verb] been operate for [adv] | 6 |
|
| 8 | have [be] operate for [adv] | 6 |
|
| 9 | have [been] operate for [adv] | 6 |
|
