| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] if [adv] required | 5 |
|
| 2 | if [adv] required [prep] | 9 |
|
| 3 | if [adv] required [prep] | 9 |
|
| 4 | if [adv] required by | 7 |
|
| 5 | if [adv] required by | 7 |
|
