| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] [prep] [adj] [noun] | 992 |
|
| 2 | could [vb infin] [prep] [adj] [noun] | 991 |
|
| 3 | [modal v] lead [prep] [adj] [noun] | 652 |
|
| 4 | could lead [prep] [adj] [noun] | 125 |
|
