| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [adv] [modal v] to be | 11 |
|
| 2 | [vb past] [adv] [modal v] to be | 11 |
|
| 3 | [vb past] [adv] [vb mod] to be | 11 |
|
| 4 | did [adv] [modal v] to be | 9 |
|
| 5 | [vb past] not [modal v] to be | 8 |
|
| 6 | [vb past] [not/n't] [modal v] to be | 8 |
|
| 7 | [vb past] n't [modal v] to be | 7 |
|
| 8 | [vb past] [adv] ought to be | 6 |
|
| 9 | [vb past] [adv] ought to be | 6 |
|
| 10 | [vb past] [adv] used to be | 5 |
|
| 11 | [vb past] [adv] used to be | 5 |
|
