| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may then be [vb pp] [to-vb] | 13 |
|
| 2 | may then be [verb] [to-vb] | 13 |
|
| 3 | may then be use [to-vb] | 5 |
|
| 4 | may then be used [to-vb] | 5 |
|
