| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [to-vb] [adv] | 954 |
|
| 2 | [to-vb] [adv] [to-vb] | 584 |
|
| 3 | had [adv] [to-vb] | 505 |
|
| 4 | had [to-vb] [to-vb] | 298 |
|
