| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] [pron] could be | 127 |
|
| 2 | [prep] [indef pn] [pron] [vb mod] be | 77 |
|
| 3 | [prep] [indef pn] [pron] [modal v] be | 77 |
|
| 4 | [prep] [indef pn] [pron] could be | 14 |
|
| 5 | [prep] [indef pn] [pron] could [be] | 14 |
|
