| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] n't [vb infin] [pron] [adv] [v-ing] | 21 |
|
| 2 | could n't [vb infin] [pron] [adv] [verb] | 17 |
|
| 3 | could [adv] [vb infin] [pron] [adv] [v-ing] | 13 |
|
| 4 | could not [vb infin] [pron] [adv] [v-ing] | 11 |
|
| 5 | could [not/n't] [vb infin] [pron] [adv] [v-ing] | 11 |
|
| 6 | could n't [vb infin] [pron] [adv] [v-ing] | 8 |
|
| 7 | could n't [verb] [pron] [adv] [v-ing] | 7 |
|
