| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do [adv] have to | 465 |
|
| 2 | do [not/n't] have to | 459 |
|
| 3 | do not have to | 459 |
|
| 4 | do n't have to | 354 |
|
| 5 | do not have to | 105 |
|
| 6 | do [adv] have to | 6 |
|
