| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been used [prep] a [adj] [noun sg] | 39 |
|
| 2 | been used [prep] a [adj] [noun sg] | 36 |
|
| 3 | been used as a [adj] [noun sg] | 20 |
|
| 4 | been used in a [adj] [noun sg] | 6 |
|
| 5 | been used for a [adj] [noun sg] | 6 |
|
| 6 | been used [prep] a wide [noun sg] | 5 |
|
| 7 | been used [prep] a wide [noun sg] | 5 |
|
