| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [vb infin] of | 171 |
|
| 2 | could [not/n't] think of | 149 |
|
| 3 | could [not/n't] think of | 149 |
|
| 4 | could n't [verb] of | 128 |
|
| 5 | could not [verb] of | 42 |
|
| 6 | could [not/n't] conceive of | 6 |
|
| 7 | could [not/n't] conceive of | 6 |
|
