| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | these studies [vb base] | 89 |
|
| 2 | these study [vb base] | 89 |
|
| 3 | these study have | 31 |
|
| 4 | these study show | 9 |
|
| 5 | these study suggest | 6 |
|
| 6 | these study do | 5 |
|
