| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it can be used [prep] a | 31 |
|
| 2 | it can be used as a | 22 |
|
| 3 | it can be used [prep] a | 22 |
|
| 4 | it can be used [prep] an | 9 |
|
