| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must [vb infin] a [noun sg] | 52 |
|
| 2 | it must [verb] a [noun sg] | 52 |
|
| 3 | it must have a [noun sg] | 13 |
|
| 4 | it must have a [noun sg] | 13 |
|
| 5 | it must [verb] a lot | 5 |
|
