| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [prep] be [verb] | 511 |
|
| 2 | is [prep] be [verb] [conj] | 446 |
|
| 3 | it is [prep] [verb] [conj] | 328 |
|
| 4 | it [prep] be [verb] [conj] | 72 |
|
| 5 | it is be [verb] [conj] | 31 |
|
