| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [adv prt] [prep] | 63 |
|
| 2 | must be [adv prt] [prep] | 63 |
|
| 3 | must be out [prep] | 20 |
|
| 4 | must be [adv prt] of | 19 |
|
| 5 | must be in [prep] | 17 |
|
| 6 | must be [adv prt] by | 16 |
|
| 7 | must be [adv prt] to | 10 |
|
| 8 | must be back [prep] | 9 |
|
| 9 | must be [adv prt] at | 6 |
|
| 10 | must be on [prep] | 5 |
|
