| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [verb] to [adj] [noun] | 68 |
|
| 2 | could be [vb pp] to [adj] [noun] | 68 |
|
| 3 | [vb mod] be extended to [adj] [noun] | 23 |
|
| 4 | [modal v] be extended to [adj] [noun] | 23 |
|
| 5 | could be extended [prep] [adj] [noun] | 6 |
|
| 6 | could be extended to [adj] [noun] | 6 |
|
| 7 | could be extended [prep] [adj] [noun] | 6 |
|
| 8 | could [be] extended to [adj] [noun] | 5 |
|
| 9 | could be extended to [adj] [noun] | 5 |
|
| 10 | could be extended to [adj] [noun] | 5 |
|
| 11 | could be extended to [adj] [noun] | 5 |
|
| 12 | could [be] extended to [adj] [noun] | 5 |
|
| 13 | could be extend to [adj] [noun] | 5 |
|
