| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [adv] [vb pp] to | 838 |
|
| 2 | had [adv] [vb pp] [v-ing] | 216 |
|
| 3 | [adv] [vb pp] [v-ing] to | 133 |
|
| 4 | had [vb pp] [v-ing] to | 46 |
|
