| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] [adv] at | 45 |
|
| 2 | must [verb] [adv] at | 45 |
|
| 3 | must [verb] [adv] at | 28 |
|
| 4 | must [verb] [adv prt] at | 17 |
|
| 5 | must look [adv] at | 11 |
|
| 6 | must look [adv] at | 11 |
|
| 7 | must do [adv] at | 5 |
|
| 8 | must do [adv] at | 5 |
|
