| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be [adv prt] to | 441 |
|
| 2 | must be [adv prt] [prep] | 63 |
|
| 3 | must be [adv prt] [prep] | 63 |
|
| 4 | must be [adv] to | 22 |
|
| 5 | must [be] [adv prt] to | 10 |
|
| 6 | must be [adv prt] to | 10 |
|
