| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [verb] [been] [verb] [prep] | 14944 |
|
| 2 | [noun sg] [verb] [been] [v-ing] [prep] | 691 |
|
| 3 | [noun] [verb] [been] operating [prep] | 21 |
|
| 4 | [noun sg] [verb] [been] operate [prep] | 16 |
|
| 5 | [noun sg] [verb] [be] operating [prep] | 14 |
|
