| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] have to be [prep] this | 6 |
|
| 2 | [not/n't] have to be [prep] this | 6 |
|
| 3 | not have to be [prep] this | 6 |
|
| 4 | have to be [verb] [prep] this | 12 |
|
| 5 | have to be [vb pp] [prep] this | 12 |
|
