| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] be [prep] [verb] a | 61 |
|
| 2 | it [modal v] be [prep] [v-ing] a | 54 |
|
| 3 | it [modal v] be [prep] have a | 12 |
|
| 4 | it [modal v] be [prep] having [art] | 9 |
|
| 5 | it [modal v] [be] [prep] having a | 8 |
|
| 6 | it [modal v] be [prep] having a | 8 |
|
| 7 | [pron] [modal v] be [prep] having a | 8 |
|
