| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] could [pron] have [vb pp] [adj] | 22 |
|
| 2 | [Wh adv] could [pron] have [vb pp] [adj] | 21 |
|
| 3 | how could [pron] have [vb pp] [adj] | 20 |
|
| 4 | how could [pron] have [vb pp] [adj] | 20 |
|
| 5 | could [adv] [pron] have [vb pp] [adj] | 7 |
|
| 6 | could not [pron] have [vb pp] [adj] | 7 |
|
| 7 | could n't [pron] have [vb pp] [adj] | 7 |
|
| 8 | could [not/n't] [pron] have [vb pp] [adj] | 7 |
|
| 9 | could [pron] have [vb pp] [pron] [adj] | 5 |
|
| 10 | could [pron] have [vb pp] [prep] [adj] | 5 |
|
| 11 | could [pron] have [vb pp] [prep] [adj] | 5 |
|
| 12 | could [pron] have [vb pp] [adj] [noun] | 11 |
|
| 13 | could [pron] have [vb pp] [adj] [art] | 8 |
|
| 14 | could [pron] have [vb pp] [adj] [art] | 8 |
|
| 15 | could [pron] have [vb pp] [adj] [noun sg] | 8 |
|
| 16 | could [pron] have [vb pp] [adj] a | 7 |
|
| 17 | could [pron] have [vb pp] [adj] a | 7 |
|
