| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] has been running for | 15 |
|
| 2 | [noun sg] has been operating for | 5 |
|
| 3 | [noun sg] has been waiting for | 5 |
|
| 4 | [noun sg] has been working for | 5 |
|
