| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [subord] it is [verb] | 205 |
|
| 2 | [vb pp] [conj] it is [v-ing] | 30 |
|
| 3 | [verb] [subord] it is [v-ing] | 22 |
|
| 4 | [vb pp] [subord] it [be] [v-ing] | 18 |
|
| 5 | [vb pp] [subord] it be [v-ing] | 18 |
|
| 6 | [vb pp] [subord] [pron] is [v-ing] | 13 |
|
| 7 | [vb pp] [subord] it [is] [v-ing] | 9 |
|
