| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] use [prep] [det] | 105 |
|
| 2 | [been] [prep] [det] year | 41 |
|
| 3 | use [prep] [det] year | 24 |
|
| 4 | [been] use [prep] year | 11 |
|
