| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been use [prep] [adj] | 128 |
|
| 2 | been use [prep] years | 11 |
|
| 3 | been [prep] [adj] years | 10 |
|
| 4 | use [prep] [adj] years | 9 |
|
