| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] used [prep] [det] years | 14 |
|
| 2 | been use [prep] [det] years | 14 |
|
| 3 | [been] use [prep] [det] years | 14 |
|
| 4 | [been] use for [det] years | 13 |
|
| 5 | [been] use for [det] years | 13 |
|
| 6 | [been] use [prep] many years | 12 |
|
