| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] a [noun sg] | 4304 |
|
| 2 | must [verb] a [noun sg] | 867 |
|
| 3 | it must [verb] a | 80 |
|
| 4 | it must [verb] [noun sg] | 41 |
|
