| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not [adv] have to | 41 |
|
| 2 | not [adv] have to | 25 |
|
| 3 | n't [adv] have to | 16 |
|
| 4 | not necessarily have to | 15 |
|
| 5 | not even have to | 9 |
|
| 6 | not always have to | 8 |
|
