| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] been used [prep] [adj] | 20 |
|
| 2 | [vb infin] [been] used [prep] [adj] | 20 |
|
| 3 | have [been] used [prep] [adj] | 20 |
|
| 4 | [vb infin] [been] used [prep] [adj] | 12 |
|
| 5 | [vb infin] [been] used for [adj] | 8 |
|
| 6 | [vb infin] [been] used for [adj] | 8 |
|
| 7 | [vb infin] [been] used in [adj] | 7 |
|
| 8 | [vb infin] [been] used [prep] [det] | 7 |
|
| 9 | [vb infin] [been] used in [adj] | 7 |
|
