| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could be [v-ing] [pron] [art] | 5 |
|
| 2 | [pers pn] could be [v-ing] [pron] [art] | 5 |
|
| 3 | could be [v-ing] [pron] [prep] [art] | 10 |
|
| 4 | could be [v-ing] [pron] [prep] [art] | 10 |
|
