| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] used for [adj] years in | 5 |
|
| 2 | [been] used for many years in | 5 |
|
| 3 | [been] used for many years in | 5 |
|
| 4 | [been] used for [det] years in | 5 |
|
| 5 | been used for [adj] years in | 5 |
|
