| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] have been [verb] [prep] | 8572 |
|
| 2 | [noun pl] have been [v-ing] [prep] | 456 |
|
| 3 | [noun] have been operating [prep] | 21 |
|
| 4 | [noun pl] have been operate [prep] | 10 |
|
| 5 | [noun pl] have [be] operating [prep] | 6 |
|
| 6 | [noun pl] [verb] been operating [prep] | 6 |
|
| 7 | [noun pl] have [been] operating [prep] | 6 |
|
| 8 | [noun pl] have be operating [prep] | 6 |
|
