| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may be [verb] [prep] [adj] | 805 |
|
| 2 | may be [vb pp] [prep] [adj] | 783 |
|
| 3 | [modal v] be caused [prep] [adj] | 32 |
|
| 4 | [vb mod] be caused [prep] [adj] | 32 |
|
| 5 | may be caused [prep] [adj] | 19 |
|
| 6 | may [be] caused [prep] [adj] | 15 |
|
| 7 | may be caused [prep] [adj] | 15 |
|
| 8 | may be cause [prep] [adj] | 15 |
|
| 9 | may be caused [prep] [adj] | 15 |
|
