| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [verb] [adv] for | 33 |
|
| 2 | it is [vb pp] [adv] for | 27 |
|
| 3 | it is [verb] [adv] for | 22 |
|
| 4 | it is [verb] [adv prt] for | 11 |
|
| 5 | it is [v-ing] [adv] for | 6 |
|
| 6 | it is used [adv] for | 5 |
|
| 7 | it is use [adv] for | 5 |
|
