| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be [verb] free [prep] | 50 |
|
| 2 | [modal v] be [vb pp] free [prep] | 48 |
|
| 3 | [modal v] be obtained [adj] [prep] | 14 |
|
| 4 | [modal v] be obtained [adj] [prep] | 14 |
|
| 5 | [modal v] [be] obtained free [prep] | 12 |
|
| 6 | [modal v] be obtained free [prep] | 12 |
|
| 7 | [modal v] be obtain free [prep] | 12 |
|
