| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] be [verb] for | 1842 |
|
| 2 | [vb -s] be operate [prep] | 27 |
|
| 3 | [verb] be operate for | 15 |
|
| 4 | [vb -s] [be] operate for | 13 |
|
