| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] [adv prt] [prep] [noun] | 1942 |
|
| 2 | could [vb infin] [adv] [prep] [noun] | 395 |
|
| 3 | could [verb] [adv prt] [prep] [noun] | 272 |
|
| 4 | could [vb infin] [adv prt] [prep] [noun] | 271 |
|
