| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [verb] by [adj] | 70 |
|
| 2 | must be [verb] by [adj] | 70 |
|
| 3 | must [be] [verb] by [adj] | 70 |
|
| 4 | must [be] [vb pp] by [adj] | 70 |
|
| 5 | must [be] accompanied by [adj] | 10 |
|
| 6 | must [be] accompany by [adj] | 10 |
|
| 7 | must [be] [verb] by other | 9 |
|
| 8 | must [be] supported by [adj] | 5 |
|
| 9 | must [be] support by [adj] | 5 |
|
