| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [not/n't] have to wait | 28 |
|
| 2 | did [not/n't] have to wait | 28 |
|
| 3 | [vb past] n't have to wait | 18 |
|
| 4 | [vb past] not have to wait | 11 |
|
