| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] use a combination of | 5 |
|
| 2 | be [verb] use a combination [prep] | 5 |
|
| 3 | be [verb] use a combination [prep] | 5 |
|
| 4 | be [verb] use a combination of | 5 |
|
