| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [be] to [be] a | 339 |
|
| 2 | it [be] to [be] [art] | 171 |
|
| 3 | it [be] [prep] [be] a | 133 |
|
| 4 | it [be] [prep] [be] a | 133 |
|
| 5 | it [be] to [be] a | 113 |
|
