| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] be [v-ing] [prep] [adj] | 6 |
|
| 2 | it [vb past] been [v-ing] [prep] [adj] | 6 |
|
| 3 | it had be [v-ing] [prep] [adj] | 6 |
|
