| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may be used [prep] a | 50 |
|
| 2 | may be used [prep] a | 50 |
|
| 3 | may be used as a | 26 |
|
| 4 | may be used as a | 26 |
|
| 5 | may be used in a | 13 |
|
| 6 | may be used in a | 13 |
|
