| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [Wh adv] [adj] it is for | 35 |
|
| 2 | [verb] how [adj] it is for | 35 |
|
| 3 | [vb base] [Wh adv] [adj] it is for | 14 |
|
| 4 | [verb] [Wh adv] difficult it is for | 13 |
|
| 5 | know [Wh adv] [adj] it is for | 9 |
|
| 6 | [vb -s] [Wh adv] [adj] it is for | 8 |
|
| 7 | know [Wh adv] [adj] it is for | 7 |
|
| 8 | [verb] [Wh adv] important it is for | 7 |
|
| 9 | [vb infin] [Wh adv] [adj] it is for | 6 |
|
