| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [subord] it [is] [verb] | 32 |
|
| 2 | be [subord] it [is] [verb] | 32 |
|
| 3 | [is] [subord] it [is] [verb] | 27 |
|
| 4 | [be] [subord] it [is] [vb pp] | 23 |
|
| 5 | is [subord] it [is] [verb] | 16 |
|
| 6 | [be] [subord] it 's [verb] | 16 |
|
| 7 | [be] [subord] it is [verb] | 16 |
|
| 8 | [be] because it [is] [verb] | 14 |
|
| 9 | 's [subord] it [is] [verb] | 11 |
|
| 10 | [be] [subord] it [is] [v-ing] | 8 |
|
| 11 | [be] if it [is] [verb] | 6 |
|
