| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] on the | 104 |
|
| 2 | must [vb infin] on the | 104 |
|
| 3 | must depend on the | 23 |
|
| 4 | must rely on the | 8 |
|
| 5 | must focus on the | 6 |
|
| 6 | must concentrate on the | 5 |
|
| 7 | must proceed on the | 5 |
|
