| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | if so [verb] | 72 |
|
| 2 | if so [vb pp] | 53 |
|
| 3 | [conj] so required | 21 |
|
| 4 | if [adv] required | 18 |
|
| 5 | if so require | 17 |
|
| 6 | [subord] so required | 17 |
|
| 7 | if so required | 17 |
|
