| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has be [verb] [prep] some study | 6 |
|
| 2 | [vb -s] been [verb] [prep] some study | 6 |
|
| 3 | [vb -s] be [verb] in some study | 6 |
|
| 4 | [vb -s] be [vb pp] [prep] some study | 6 |
|
| 5 | [vb -s] be [verb] [prep] some study | 6 |
|
| 6 | [vb -s] be [verb] [prep] some studies | 6 |
|
