| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should be [verb] to | 1848 |
|
| 2 | should be [vb pp] to | 1810 |
|
| 3 | [modal v] be limited to | 137 |
|
| 4 | should be limited [prep] | 35 |
|
| 5 | should be limited [prep] | 35 |
|
| 6 | should [be] limited to | 29 |
|
| 7 | should be limit to | 29 |
|
| 8 | should [be] limited to | 29 |
|
| 9 | should be limited to | 29 |
|
| 10 | should be limited to | 29 |
|
