| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] has [been] [verb] | 17778 |
|
| 2 | [noun sg] has [been] [v-ing] | 1075 |
|
| 3 | [noun sg] [verb] [been] operating | 25 |
|
| 4 | [noun sg] have [been] operating | 25 |
|
| 5 | [noun] has [been] operating | 25 |
|
| 6 | [noun sg] has [been] operate | 19 |
|
| 7 | [noun sg] has [be] operating | 16 |
|
| 8 | [noun sg] [vb -s] [been] operating | 16 |
|
