| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [to-vb] [adj] [noun] | 31 |
|
| 2 | it [is] [to-vb] [adj] [noun sg] | 17 |
|
| 3 | it [is] [to-vb] [adj] [noun pl] | 16 |
|
| 4 | it [is] to provide [adj] [noun] | 8 |
|
