| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [verb] to | 892 |
|
| 2 | could be [vb pp] to | 869 |
|
| 3 | [modal v] be limited to | 137 |
|
| 4 | could be limited [prep] | 9 |
|
| 5 | could be limited [prep] | 9 |
|
| 6 | could be limited to | 6 |
|
| 7 | could [be] limited to | 6 |
|
| 8 | could [be] limited to | 6 |
|
| 9 | could be limited to | 6 |
|
| 10 | could be limit to | 6 |
|
