| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] it is [verb] for | 67 |
|
| 2 | [subord] it is [vb pp] for | 55 |
|
| 3 | if it is [verb] for | 21 |
|
| 4 | when it is [verb] for | 14 |
|
| 5 | [subord] it is used for | 9 |
|
| 6 | [subord] it is use for | 9 |
|
| 7 | because it is [verb] for | 6 |
|
| 8 | [subord] it is [to-vb] for | 6 |
|
| 9 | [subord] it is require for | 6 |
|
| 10 | [subord] it is required for | 6 |
|
| 11 | [subord] it is [v-ing] for | 6 |
|
| 12 | [subord] it is intend for | 5 |
|
| 13 | [subord] it is intended for | 5 |
|
