| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [be] [v-ing] for | 26 |
|
| 2 | could be [v-ing] for | 26 |
|
| 3 | could [be] heading for | 9 |
|
| 4 | could [be] looking for | 6 |
|
