| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adv] [adj] to understand and | 7 |
|
| 2 | [be] [adv] [adj] to understand and | 7 |
|
| 3 | [adv] [adj] to understand and [verb] | 8 |
|
| 4 | [adv] [adj] to understand and [vb infin] | 6 |
|
