| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be used for [adj] | 241 |
|
| 2 | could be [verb] for [adj] | 119 |
|
| 3 | could be [vb pp] for [adj] | 119 |
|
| 4 | could be used [prep] [adj] | 79 |
|
| 5 | could be use for [adj] | 34 |
|
| 6 | could [be] used for [adj] | 34 |
|
