| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] factors need to be | 12 |
|
| 2 | [adj] factors need to be | 7 |
|
| 3 | [det] factors need to be | 5 |
|
| 4 | factors need to be [verb] | 17 |
|
| 5 | factors need to be [vb pp] | 17 |
|
| 6 | factors need to be take | 6 |
|
| 7 | factors need to be taken | 6 |
|
