| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] be used [prep] [noun] | 363 |
|
| 2 | may be used [prep] [noun] | 96 |
|
| 3 | may [adv] be [prep] [noun] | 79 |
|
| 4 | may [adv] be used [prep] | 76 |
|
