| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [adv prt] [prep] [noun] | 22 |
|
| 2 | must be [adv prt] [prep] [noun prp] | 11 |
|
| 3 | must be [adv prt] [prep] [noun sg] | 10 |
|
| 4 | must be [adv prt] by [noun] | 8 |
|
| 5 | must be in [prep] [noun] | 8 |
|
| 6 | must be [adv prt] of [noun] | 7 |
|
| 7 | must be out [prep] [noun] | 7 |
|
