| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [prep] [adj] [noun sg] | 137 |
|
| 2 | has been used [prep] [noun sg] | 35 |
|
| 3 | been used [prep] [adj] [noun sg] | 33 |
|
| 4 | has been used [prep] [adj] | 33 |
|
