| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must be [art] [noun] | 206 |
|
| 2 | it must be [art] [noun sg] | 194 |
|
| 3 | it [modal v] be [art] mistake | 112 |
|
| 4 | it [vb mod] be [art] mistake | 112 |
|
| 5 | [pron] must be [art] mistake | 8 |
|
| 6 | it must be [art] mistake | 6 |
|
| 7 | it must be [art] mistake | 6 |
|
| 8 | it must [be] [art] mistake | 6 |
|
