| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must [verb] be [prep] [det] | 15 |
|
| 2 | it must [verb] be [prep] [det] | 15 |
|
| 3 | it must [verb] be [adv] [det] | 5 |
|
| 4 | it must [verb] be [det] [noun] | 19 |
|
| 5 | it must [verb] be [det] [noun sg] | 14 |
|
| 6 | it must [verb] be [det] [noun pl] | 5 |
|
