| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [be] [vb pp] in a | 106 |
|
| 2 | could be [verb] in a | 106 |
|
| 3 | could [be] [verb] in a | 106 |
|
| 4 | could be [verb] in a | 106 |
|
| 5 | could [be] [verb] in a | 106 |
|
| 6 | could [be] used in a | 9 |
|
| 7 | could [be] use in a | 9 |
|
| 8 | could [be] seen in a | 6 |
|
| 9 | could [be] see in a | 6 |
|
