| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] be [v-ing] [adj] | 10 |
|
| 2 | it [vb past] [been] [v-ing] [adj] | 9 |
|
| 3 | it [vb past] been [v-ing] [adj] | 9 |
|
| 4 | it had [be] [v-ing] [adj] | 9 |
|
| 5 | it [vb past] [be] [v-ing] [det] | 5 |
|
