| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [verb] for [v-ing] | 23 |
|
| 2 | it be [vb pp] for [v-ing] | 22 |
|
| 3 | it is [verb] for [v-ing] | 11 |
|
| 4 | it was [verb] for [v-ing] | 10 |
|
| 5 | it be use for [v-ing] | 7 |
|
| 6 | it be used for [v-ing] | 7 |
|
