| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could have [vb pp] [adv prt] a | 9 |
|
| 2 | [pers pn] could have [vb pp] [adv prt] a | 7 |
|
| 3 | could have [vb pp] [adv prt] [prep] a | 12 |
|
| 4 | could have [vb pp] [adv prt] [prep] a | 12 |
|
| 5 | could have [vb pp] [adv prt] a [noun sg] | 9 |
|
| 6 | could have [vb pp] [adv prt] a [noun] | 9 |
|
| 7 | could have [vb pp] [adv prt] a [adj] | 5 |
|
| 8 | could have [vb pp] [adv prt] a [adj] | 5 |
|
