| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [adv] [v-ing] [prep] | 753 |
|
| 2 | [adj] [be] [adv] [v-ing] [prep] | 300 |
|
| 3 | [adj] it [be] [adv] [prep] | 104 |
|
| 4 | [adj] it [be] [v-ing] [prep] | 76 |
|
| 5 | [adj] it [be] [adv] [v-ing] | 43 |
|
