| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] it is [adj] for | 87 |
|
| 2 | [noun sg] it is possible for | 14 |
|
| 3 | [noun sg] it is necessary for | 11 |
|
| 4 | [noun sg] it is difficult for | 7 |
|
| 5 | [noun sg] it is important for | 6 |
|
| 6 | [noun sg] it is essential for | 6 |
|
| 7 | [noun sg] it is usual for | 5 |
|
