| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [ex0] used [prep] be | 40 |
|
| 2 | then [pron] used [prep] be | 30 |
|
| 3 | then [ex0] [modal v] [prep] be | 20 |
|
| 4 | then [ex0] used [prep] [be] | 19 |
|
