| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] have taken [noun sg] | 23 |
|
| 2 | could have taken [noun sg] | 12 |
|
| 3 | could [not/n't] have taken | 12 |
|
| 4 | could [not/n't] have [noun sg] | 7 |
|
