| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must of | 421 |
|
| 2 | must in | 122 |
|
| 3 | must at | 101 |
|
| 4 | must by | 24 |
|
| 5 | must for | 23 |
|
| 6 | must on | 19 |
|
| 7 | must to | 15 |
|
| 8 | must as | 7 |
|
