| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a be | 28 |
|
| 2 | [prep] a be | 26 |
|
| 3 | [prep] a is | 17 |
|
| 4 | in a be | 7 |
|
| 5 | in a be | 7 |
|
