| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have had to | 351 |
|
| 2 | [verb] had to | 351 |
|
| 3 | [vb base] had to | 134 |
|
| 4 | have had to | 106 |
|
| 5 | [vb -s] had to | 91 |
|
| 6 | has had to | 84 |
|
| 7 | [vb infin] had to | 69 |
|
| 8 | have had to | 67 |
|
| 9 | [vb past] had to | 55 |
|
| 10 | be had to | 54 |
|
| 11 | [be] had to | 54 |
|
| 12 | [be] had to | 46 |
|
| 13 | be had to | 46 |
|
| 14 | had had to | 46 |
|
| 15 | [adv] had to | 45 |
|
| 16 | [adv] had to | 35 |
|
| 17 | 've had to | 28 |
|
| 18 | [not/n't] had to | 10 |
|
| 19 | not had to | 10 |
|
| 20 | 'd had to | 9 |
|
| 21 | 's had to | 7 |
|
| 22 | not had to | 5 |
|
| 23 | n't had to | 5 |
|
| 24 | had [verb] to | 112 |
|
| 25 | had [to-vb] to | 99 |
|
| 26 | had [noun] to | 69 |
|
| 27 | had [noun sg] to | 65 |
|
| 28 | had access to | 37 |
|
| 29 | had access to | 37 |
|
| 30 | had come to | 16 |
|
