| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be used [prep] [adj] | 79 |
|
| 2 | could be [verb] [prep] other | 53 |
|
| 3 | could be [vb pp] [prep] other | 52 |
|
| 4 | [modal v] be used [prep] other | 32 |
|
| 5 | could be use [prep] other | 5 |
|
| 6 | could [be] used [prep] other | 5 |
|
| 7 | could be used [prep] other | 5 |
|
