| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | understand and [vb infin] [prep] the [adj] | 10 |
|
| 2 | understand and [vb infin] [prep] the [adj] | 9 |
|
| 3 | to understand and [vb infin] [prep] the [adj] | 9 |
|
