| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it had [vb pp] so [adv] | 14 |
|
| 2 | it had [verb] so [adv] | 14 |
|
| 3 | it had happen so [adv] | 5 |
|
| 4 | it had happened so [adv] | 5 |
|
