| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [verb] [prep] the [noun] | 1049 |
|
| 2 | [modal v] be [verb] [prep] the basis | 145 |
|
| 3 | [vb mod] be [verb] [prep] the basis | 145 |
|
| 4 | must [be] [verb] [prep] the basis | 5 |
|
| 5 | must be [verb] [prep] the basis | 5 |
|
| 6 | must [be] [verb] [prep] the basis | 5 |
|
| 7 | must be [verb] [prep] the basis | 5 |
|
| 8 | must be [verb] [prep] [art] basis | 5 |
|
| 9 | must be [verb] [prep] the basis | 5 |
|
| 10 | must be [verb] [prep] [art] basis | 5 |
|
