| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [vb pp] [prep] [art] [adj] | 900 |
|
| 2 | [vb mod] be [vb pp] [prep] [art] [num ord] | 612 |
|
| 3 | [modal v] be [vb pp] [prep] [art] [num ord] | 612 |
|
| 4 | could be [verb] [prep] [art] [num ord] | 37 |
|
| 5 | could [be] [vb pp] [prep] [art] [num ord] | 34 |
|
| 6 | could be [vb pp] [prep] [art] [num ord] | 34 |
|
| 7 | could be [vb pp] [prep] [art] [num ord] | 34 |
|
