| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [vb base] be | 114 |
|
| 2 | [prep] then be | 79 |
|
| 3 | [prep] then [vb base] | 70 |
|
| 4 | then [vb base] be | 25 |
|
