| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could it [be] that [pron] [verb] | 11 |
|
| 2 | could [pron] [be] that [pron] [vb past] | 7 |
|
| 3 | [modal v] it [be] that [pron] [vb past] | 7 |
|
| 4 | could it [be] [conj] [pron] [vb past] | 7 |
|
