| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] must be | 28 |
|
| 2 | is [vb pp] must be | 24 |
|
| 3 | is [adj] must be | 6 |
|
| 4 | is [pers pn] must be | 6 |
|
| 5 | is [pron] must be | 6 |
|
| 6 | is [adj] must be | 6 |
|
| 7 | is must be [vb pp] | 6 |
|
| 8 | is must be [verb] | 6 |
|
