| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] been [v-ing] for a | 45 |
|
| 2 | has be [v-ing] for a | 30 |
|
| 3 | 's be [v-ing] for a | 15 |
|
| 4 | [vb -s] be running for a | 6 |
|
| 5 | [vb -s] be looking for a | 5 |
|
