| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be [adv prt] [prep] | 1803 |
|
| 2 | must be [adv] [prep] | 134 |
|
| 3 | must [be] [adv prt] [prep] | 63 |
|
| 4 | must [be] [adv prt] [prep] | 63 |
|
| 5 | must be [adv prt] [prep] | 63 |
|
| 6 | must be [adv prt] [prep] | 63 |
|
