| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] be [verb] for | 5593 |
|
| 2 | [verb] be [v-ing] for | 1594 |
|
| 3 | [verb] be operating [prep] | 51 |
|
| 4 | [verb] be operate for | 15 |
|
| 5 | [verb] [be] operating for | 15 |
|
