| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [ex0] must [be] a [noun sg] | 213 |
|
| 2 | [ex0] [adv] [be] a [noun sg] | 54 |
|
| 3 | must [adv] [be] a [noun sg] | 46 |
|
| 4 | [ex0] must [adv] [be] a | 27 |
|
| 5 | [ex0] must [adv] [be] [noun sg] | 13 |
|
