| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [verb] [verb] [prep] | 86 |
|
| 2 | must be [vb pp] [verb] [prep] | 83 |
|
| 3 | must be [verb] [to-vb] [prep] | 58 |
|
| 4 | must be [verb] [verb] to | 18 |
|
| 5 | must be [verb] [vb pp] [prep] | 14 |
|
| 6 | must be made [verb] [prep] | 12 |
|
| 7 | must be make [verb] [prep] | 12 |
|
| 8 | must be [verb] [verb] in | 11 |
|
| 9 | must be [verb] [v-ing] [prep] | 10 |
|
| 10 | must be allow [verb] [prep] | 10 |
|
| 11 | must be allowed [verb] [prep] | 10 |
|
| 12 | must be [verb] [verb] for | 8 |
|
| 13 | must be [verb] [verb] with | 8 |
|
| 14 | must be [verb] [verb] at | 6 |
|
| 15 | must be kept [verb] [prep] | 5 |
|
| 16 | must be [verb] [verb] of | 5 |
|
| 17 | must be keep [verb] [prep] | 5 |
|
| 18 | must be [verb] according [prep] | 5 |
|
| 19 | must be [verb] [verb] by | 5 |
|
| 20 | must be [verb] accord [prep] | 5 |
|
