| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it is [adj] to [v-ing] | 6 |
|
| 2 | it is [adv] [adj] to [v-ing] | 6 |
|
| 3 | it is [adj] to be [v-ing] | 12 |
|
| 4 | it is [adj] to [be] [v-ing] | 12 |
|
| 5 | it is [adj] to [be] [v-ing] | 12 |
|
| 6 | it is [adj] to be [v-ing] | 12 |
|
| 7 | it is [adj] to [v-ing] [art] | 6 |
|
| 8 | it is [adj] to [v-ing] [art] | 6 |
|
